1917 01 28.90  22.60  25.75 
1917 02 30.70  22.40  26.55 
1917 03 31.00  22.90  26.95 
1917 04 33.09  24.30  28.70 
1917 05 32.09  24.20  28.15 
1917 06 31.10  24.30  27.70 
1917 07 30.10  24.10  27.10 
1917 08 29.70  24.20  26.95 
1917 09 30.60  24.50  27.55 
1917 10 31.10  24.80  27.95 
1917 11 30.70  24.50  27.60 
1917 12 29.90  23.40  26.65 
1918 01 29.20  22.40  25.80 
1918 02 30.00  22.50  26.25 
1918 03 31.00  22.40  26.70 
1918 04 31.80  23.10  27.45 
1918 05 31.70  24.10  27.90 
1918 06 31.00  23.70  27.35 
1918 07 30.40  23.50  26.95 
1918 08 31.60  24.50  28.05 
1918 09 33.30  24.90  29.09 
1918 10 32.00  24.80  28.40 
1918 11 31.30  24.10  27.70 
1918 12 30.00  23.20  26.60 
1919 01 30.70  22.50  26.60 
1919 02 32.40  23.10  27.75 
1919 03 32.30  23.70  28.00 
1919 04 32.59  24.60  28.59 
1919 05 30.70  24.20  27.45 
1919 06 30.80  24.00  27.40 
1919 07 31.00  23.70  27.35 
1919 08 31.70  24.10  27.90 
1919 09 32.90  24.50  28.70 
1919 10 32.90  24.50  28.70 
1919 11 32.40  24.00  28.20 
1919 12 31.40  22.90  27.15 
1920 01 31.00  22.20  26.60 
1920 02 32.20  22.20  27.20 
1920 03 33.20  21.90  27.55 
1920 04 33.30  22.50  27.90 
1920 05 33.09  23.00  28.05 
1920 06 31.60  22.50  27.05 
1920 07 31.40  22.30  26.84 
1920 08 32.50  22.80  27.65 
1920 09 32.80  22.80  27.80 
1920 10 33.00  22.60  27.80 
1920 11 32.00  22.00  27.00 
1920 12 30.50  20.80  25.65 
1921 01 31.20  20.20  25.70 
1921 02 32.09  20.20  26.15 
1921 03 32.59  20.60  26.59 
1921 04 32.50  22.10  27.30 
1921 05 34.50  22.70  28.60 
1921 06 31.30  22.00  26.65 
1921 07 30.50  21.80  26.15 
1921 08 31.70  23.00  27.35 
1921 09 33.09  24.30  28.70 
1921 10 32.30  24.00  28.15 
1921 11 31.90  23.80  27.84 
1921 12 31.00  23.30  27.15 
1922 01 30.80  22.90  26.84 
1922 02 32.09  22.50  27.30 
1922 03 33.40  22.90  28.15 
1922 04 34.50  23.30  28.90 
1922 05 32.70  23.80  28.25 
1922 06 31.60  23.50  27.55 
1922 07 31.80  23.50  27.65 
1922 08 32.09  23.70  27.90 
1922 09 33.30  24.30  28.80 
1922 10 33.30  24.40  28.84 
1922 11 32.09  24.00  28.05 
1922 12 29.70  22.70  26.20 
1923 01 30.20  21.90  26.05 
1923 02 30.90  21.90  26.40 
1923 03 32.40  22.10  27.25 
1923 04 33.50  23.30  28.40 
1923 05 33.80  23.90  28.84 
1923 06 30.60  23.30  26.95 
1923 07 30.90  23.40  27.15 
1923 08 31.70  23.70  27.70 
1923 09 32.59  24.30  28.45 
1923 10 32.40  24.20  28.30 
1923 11 32.40  23.90  28.15 
1923 12 30.90  23.20  27.05 
1924 01 30.50  22.00  26.25 
1924 02 32.30  21.90  27.09 
1924 03 34.50  23.10  28.80 
1924 04 35.70  23.90  29.80 
1924 05 35.30  24.40  29.84 
1924 06 31.40  23.80  27.59 
1924 07 30.50  23.60  27.05 
1924 08 30.50  23.50  27.00 
1924 09 30.90  23.40  27.15 
1924 10 31.10  23.60  27.35 
1924 11 31.40  26.70  29.05 
1924 12 29.90  22.70  26.30 
1925 01 29.60  20.80  25.20 
1925 02 31.80  21.40  26.59 
1925 03 33.70  22.10  27.90 
1925 04 34.90  23.00  28.95 
1925 05 35.40  23.10  29.25 
1925 06 33.70  22.60  28.15 
1925 07 33.20  22.70  27.95 
1925 08 32.09  23.20  27.65 
1925 09 32.50  23.80  28.15 
1925 10 34.09  23.70  28.90 
1925 11 32.20  23.40  27.80 
1925 12 31.90  22.60  27.25 
1926 01 32.20  21.50  26.85 
1926 02 34.40  21.90  28.15 
1926 03 35.90  22.10  29.00 
1926 04 36.50  22.90  29.70 
1926 05 35.80  24.20  30.00 
1926 06 33.70  24.00  28.85 
1926 07 32.20  23.40  27.80 
1926 08 32.80  23.90  28.34 
1926 09 31.70  23.80  27.75 
1926 10 32.70  24.00  28.35 
1926 11 31.10  23.90  27.50 
1926 12 29.70  23.10  26.40 
1927 01 29.70  22.40  26.05 
1927 02 30.20  22.20  26.20 
1927 03 33.20  22.80  28.00 
1927 04 32.40  23.80  28.10 
1927 05 31.50  23.80  27.65 
1927 06 30.50  23.40  26.95 
1927 07 30.20  23.70  26.95 
1927 08 30.40  23.40  26.90 
1927 09 31.70  24.20  27.95 
1927 10 31.80  24.20  28.00 
1927 11 31.70  24.30  28.00 
1927 12 30.90  23.20  27.05 
1928 01 30.60  22.50  26.55 
1928 02 30.50  22.70  26.60 
1928 03 32.59  23.30  27.95 
1928 04 32.90  23.60  28.25 
1928 05 32.80  23.90  28.34 
1928 06 31.40  23.60  27.50 
1928 07 30.40  23.50  26.95 
1928 08 31.10  23.70  27.40 
1928 09 32.59  24.00  28.30 
1928 10 32.40  24.00  28.20 
1928 11 31.70  24.20  27.95 
1928 12 29.50  23.00  26.25 
1929 01 30.10  21.20  25.65 
1929 02 31.20  22.00  26.60 
1929 03 32.40  22.60  27.50 
1929 04 32.90  23.30  28.10 
1929 05 31.20  23.70  27.45 
1929 06 30.60  23.30  26.95 
1929 07 30.40  23.30  26.84 
1929 08 32.00  24.00  28.00 
1929 09 31.90  24.00  27.95 
1929 10 32.59  24.10  28.34 
1929 11 30.80  23.60  27.20 
1929 12 29.80  22.00  25.90 
1933 01 31.00  22.40  26.70 
1933 02 31.40  21.80  26.59 
1933 03 32.90  22.60  27.75 
1933 04 34.50  23.90  29.20 
1933 05 33.30  24.30  28.80 
1933 06 31.30  23.60  27.45 
1933 07 31.00  23.40  27.20 
1933 08 31.10  23.10  27.10 
1933 09 32.09  23.70  27.90 
1933 10 32.00  23.90  27.95 
1933 11 31.10  23.50  27.30 
1933 12 29.90  22.60  26.25 
1934 01 29.20  21.90  25.55 
1934 02 30.70  21.00  25.85 
1934 03 32.20  21.60  26.90 
1934 04 33.59  22.90  28.25 
1934 05 33.59  23.70  28.65 
1934 06 33.50  23.80  28.65 
1934 07 31.50  23.20  27.35 
1934 08 32.50  23.70  28.10 
1934 09 32.40  23.40  27.90 
1934 10 31.70  23.90  27.80 
1934 11 32.00  24.00  28.00 
1934 12 31.10  22.70  26.90 
1935 01 31.00  22.40  26.70 
1935 02 31.90  22.30  27.09 
1935 03 31.60  22.30  26.95 
1935 04 34.00  23.00  28.50 
1935 05 33.20  23.90  28.55 
1935 06 32.00  23.50  27.75 
1935 07 31.60  23.80  27.70 
1935 08 31.20  23.30  27.25 
1935 09 32.50  24.00  28.25 
1935 10 32.09  24.00  28.05 
1935 11 32.09  24.00  28.05 
1936 01 30.40  22.00  26.20 
1936 02 31.50  21.60  26.55 
1936 03 33.20  23.30  28.25 
1936 04 32.59  24.00  28.30 
1936 05 33.00  24.50  28.75 
1936 06 31.20  23.60  27.40 
1936 07 31.40  23.70  27.55 
1936 08 31.60  23.50  27.55 
1936 09 32.20  23.80  28.00 
1936 10 31.70  23.80  27.75 
1936 11 31.60  24.00  27.80 
1936 12 30.50  22.80  26.65 
1937 01 30.10  22.80  26.45 
1937 02 31.50  22.40  26.95 
1937 03 32.30  22.80  27.55 
1937 04 33.20  23.60  28.40 
1937 05 32.40  24.10  28.25 
1937 06 31.30  23.70  27.50 
1937 07 30.80  23.30  27.05 
1937 08 31.30  23.50  27.40 
1937 09 32.40  24.30  28.35 
1937 10 32.30  24.50  28.40 
1937 11 31.80  24.10  27.95 
1937 12 30.90  22.60  26.75 
1951 01 30.40  21.50  25.95 
1951 02 31.40  23.80  27.59 
1951 03 31.70  23.80  27.75 
1951 04 32.80  25.60  29.20 
1951 05 32.80  26.00  29.40 
1951 06 31.50  25.90  28.70 
1951 07 31.40  26.10  28.75 
1951 08 33.30  26.70  30.00 
1951 09 32.90  26.70  29.80 
1951 10 32.70  26.70  29.70 
1951 11 32.90  25.30  29.10 
1951 12 32.00  24.10  28.05 
1952 01 31.70  23.50  27.60 
1952 02 32.90  23.30  28.10 
1952 03 33.90  23.50  28.70 
1952 04 35.20  24.80  30.00 
1952 05 34.50  25.30  29.90 
1952 06 32.30  24.00  28.15 
1952 07 31.30  24.00  27.65 
1952 08 31.70  24.30  28.00 
1952 09 32.90  24.10  28.50 
1952 10 33.09  24.80  28.95 
1952 11 32.00  23.50  27.75 
1952 12 31.90  23.80  27.84 
1953 01 31.70  23.20  27.45 
1953 02 31.60  20.90  26.25 
1953 03 32.20  23.60  27.90 
1953 04 34.30  24.20  29.25 
1953 05 32.40  22.90  27.65 
1953 06 32.00  23.40  27.70 
1953 07 31.80  22.60  27.20 
1953 08 34.30  24.30  29.30 
1953 09 34.00  24.20  29.10 
1953 10 33.50  23.40  28.45 
1953 11 33.09  22.70  27.90 
1953 12 32.50  21.80  27.15 
1954 01 31.20  20.70  25.95 
1954 02 33.20  21.90  27.55 
1954 03 34.00  21.90  27.95 
1954 04 32.50  21.60  27.05 
1954 05 32.80  22.10  27.45 
1954 06 31.90  22.40  27.15 
1954 07 32.59  23.00  27.80 
1954 08 32.09  22.90  27.50 
1954 09 33.80  23.50  28.65 
1954 10 33.59  23.20  28.40 
1954 11 33.09  23.30  28.20 
1954 12 31.60  23.00  27.30 
1955 01 31.40  22.10  26.75 
1955 02 32.20  23.00  27.60 
1955 03 31.30  22.50  26.90 
1955 04 33.00  23.00  28.00 
1955 05 33.70  23.40  28.55 
1955 06 33.20  24.30  28.75 
1955 07 32.59  23.80  28.20 
1955 08 33.00  23.80  28.40 
1955 09 32.59  22.60  27.59 
1955 10 33.20  22.80  28.00 
1955 11 32.50  22.30  27.40 
1955 12 30.90  21.00  25.95 
1956 01 31.80  20.60  26.20 
1956 02 31.70  20.00  25.85 
1956 03 33.09  20.29  26.70 
1956 04 34.70  23.40  29.05 
1956 05 33.20  23.30  28.25 
1956 06 32.30  23.50  27.90 
1956 07 33.00  22.90  27.95 
1956 08 32.30  23.00  27.65 
1956 09 33.00  23.30  28.15 
1956 10 33.00  23.60  28.30 
1956 11 32.20  23.30  27.75 
1956 12 30.80  22.80  26.80 
1957 01 30.50  21.60  26.05 
1957 02 31.60  22.30  26.95 
1957 03 34.20  22.00  28.10 
1957 04 34.40  23.00  28.70 
1957 05 33.90  24.20  29.05 
1957 06 32.50  23.60  28.05 
1957 07 31.50  23.10  27.30 
1957 08 33.20  24.10  28.65 
1957 09 34.59  24.80  29.70 
1957 10 34.30  24.40  29.34 
1957 11 32.00  23.80  27.90 
1957 12 31.40  23.30  27.34 
1958 01 32.30  23.00  27.65 
1958 02 33.00  22.90  27.95 
1958 03 35.90  23.90  29.90 
1958 04 35.59  24.80  30.20 
1958 05 34.20  24.20  29.20 
1958 06 32.50  24.00  28.25 
1958 07 33.09  23.90  28.50 
1958 08 32.90  23.80  28.35 
1958 09 34.59  24.60  29.59 
1958 10 34.00  24.00  29.00 
1958 11 33.90  24.10  29.00 
1958 12 33.30  23.90  28.59 
1959 01 32.59  23.10  27.84 
1959 02 33.30  22.60  27.95 
1959 03 34.90  23.20  29.05 
1959 04 35.90  24.10  30.00 
1959 05 35.40  24.50  29.95 
1959 06 31.70  23.90  27.80 
1959 07 32.50  23.40  27.95 
1959 08 32.50  24.10  28.30 
1959 09 32.80  24.10  28.45 
1959 10 33.09  24.00  28.55 
1959 11 32.80  24.10  28.45 
1959 12 32.40  23.80  28.10 
1960 01 32.09  23.20  27.65 
1960 02 33.80  23.20  28.50 
1960 03 34.59  23.10  28.84 
1960 04 34.20  24.30  29.25 
1960 05 33.90  24.50  29.20 
1960 06 32.40  23.70  28.05 
1960 07 32.40  23.80  28.10 
1960 08 32.80  24.20  28.50 
1960 09 33.30  24.10  28.70 
1960 10 34.00  24.60  29.30 
1960 11 32.90  24.00  28.45 
1960 12 32.09  22.70  27.40 
1961 01 32.20  22.80  27.50 
1961 02 33.09  22.10  27.59 
1961 03 34.59  23.00  28.80 
1961 04 35.50  23.30  29.40 
1961 05 34.80  24.20  29.50 
1961 06 32.80  24.10  28.45 
1961 07 32.00  23.60  27.80 
1961 08 32.70  24.10  28.40 
1961 09 32.80  23.80  28.30 
1961 10 33.00  24.20  28.60 
1961 11 31.90  24.00  27.95 
1961 12 31.20  23.10  27.15 
1962 01 31.40  22.70  27.05 
1962 02 32.70  22.30  27.50 
1962 03 34.50  23.40  28.95 
1962 04 35.09  24.30  29.70 
1962 05 35.20  25.00  30.10 
1962 06 32.40  23.70  28.05 
1962 07 31.50  23.30  27.40 
1962 08 31.90  23.80  27.84 
1962 09 34.00  24.70  29.35 
1962 10 33.80  24.80  29.30 
1962 11 33.40  24.50  28.95 
1962 12 32.00  23.70  27.85 
1963 01 32.09  22.00  27.05 
1963 02 33.30  22.60  27.95 
1963 03 35.30  23.00  29.15 
1963 04 34.70  24.00  29.35 
1963 05 32.50  24.00  28.25 
1963 06 32.00  24.30  28.15 
1963 07 31.80  23.40  27.59 
1963 08 32.70  24.10  28.40 
1963 09 33.40  24.20  28.80 
1963 10 33.80  23.80  28.80 
1963 11 32.09  23.70  27.90 
1963 12 31.60  23.00  27.30 
1964 01 31.80  22.00  26.90 
1964 02 33.00  22.60  27.80 
1964 03 34.30  23.00  28.65 
1964 04 34.20  24.00  29.10 
1964 05 34.50  24.00  29.25 
1964 06 32.90  24.30  28.60 
1964 07 32.00  23.40  27.70 
1964 08 32.70  24.10  28.40 
1964 09 33.30  24.20  28.75 
1964 10 33.00  23.80  28.40 
1964 11 32.90  23.70  28.30 
1964 12 32.20  23.00  27.60 
1965 01 32.00  22.70  27.35 
1965 02 31.10  22.10  26.60 
1965 03 33.50  22.80  28.15 
1965 04 35.09  23.60  29.34 
1965 05 34.00  24.20  29.10 
1965 06 31.20  22.90  27.05 
1965 07 32.90  23.70  28.30 
1965 08 32.09  23.70  27.90 
1965 09 33.59  24.60  29.09 
1965 10 33.50  24.50  29.00 
1965 11 32.59  24.40  28.50 
1965 12 32.30  24.00  28.15 
1966 01 32.50  23.50  28.00 
1966 02 33.00  22.80  27.90 
1966 03 34.80  23.70  29.25 
1966 04 35.30  24.00  29.65 
1966 05 34.80  24.60  29.70 
1966 06 32.40  24.00  28.20 
1966 07 31.90  23.60  27.75 
1966 08 32.70  24.10  28.40 
1966 09 33.30  24.40  28.84 
1966 10 33.59  24.50  29.05 
1966 11 32.59  24.30  28.45 
1966 12 31.30  23.70  27.50 
1967 01 31.10  23.00  27.05 
1967 02 32.59  23.30  27.95 
1967 03 33.59  23.40  28.50 
1967 04 34.00  24.10  29.05 
1967 05 32.50  24.00  28.25 
1967 06 32.00  23.60  27.80 
1967 07 31.60  23.30  27.45 
1967 08 32.30  23.70  28.00 
1967 09 32.90  23.80  28.35 
1967 10 33.20  23.50  28.35 
1967 11 32.70  23.90  28.30 
1967 12 32.00  22.80  27.40 
1968 01 31.80  22.20  27.00 
1968 02 32.50  22.10  27.30 
1968 03 34.20  23.00  28.60 
1968 04 33.80  23.60  28.70 
1968 05 34.00  23.20  28.60 
1968 06 32.09  22.60  27.34 
1968 07 33.20  22.90  28.05 
1968 08 33.50  23.60  28.55 
1968 09 34.30  23.40  28.84 
1968 10 34.20  23.80  29.00 
1968 11 33.70  23.70  28.70 
1968 12 32.80  23.00  27.90 
1969 01 31.90  23.10  27.50 
1969 02 33.30  23.70  28.50 
1969 03 35.90  25.00  30.45 
1969 04 35.70  24.10  29.90 
1969 05 35.50  25.10  30.30 
1969 06 33.90  24.60  29.25 
1969 07 33.00  24.00  28.50 
1969 08 32.80  23.40  28.09 
1969 09 33.70  24.10  28.90 
1969 10 33.40  23.90  28.65 
1969 11 34.00  24.60  29.30 
1969 12 33.20  24.10  28.65 
1970 01 31.40  23.20  27.30 
1970 02 34.20  24.50  29.35 
1970 03 35.70  24.80  30.25 
1970 04 35.90  24.80  30.35 
1970 05 35.20  25.00  30.10 
1970 06 32.80  24.10  28.45 
1970 07 32.30  23.70  28.00 
1970 08 32.70  23.80  28.25 
1970 09 33.70  24.10  28.90 
1970 10 34.80  24.90  29.84 
1970 11 33.70  24.00  28.85 
1970 12 32.70  23.40  28.05 
1971 01 31.60  22.20  26.90 
1971 02 32.50  22.00  27.25 
1971 03 33.90  22.70  28.30 
1971 04 34.09  23.10  28.59 
1971 05 32.20  22.00  27.10 
1971 06 28.40  19.90  24.15 
1971 07 28.40  19.90  24.15 
1971 08 29.20  19.90  24.55 
1971 09 30.10  20.70  25.40 
1971 10 30.80  21.90  26.34 
1971 11 32.20  23.50  27.85 
1971 12 31.50  22.90  27.20 
1972 01 30.20  22.20  26.20 
1972 02 32.00  22.20  27.10 
1972 03 33.80  23.10  28.45 
1972 04 33.80  23.30  28.55 
1972 05 32.80  23.30  28.05 
1972 06 33.30  22.70  28.00 
1972 07 33.00  23.20  28.10 
1972 08 33.90  23.10  28.50 
1972 09 34.70  23.00  28.85 
1972 10 34.30  23.00  28.65 
1972 11 33.50  22.40  27.95 
1972 12 33.09  22.30  27.70 
1973 01 33.90  22.20  28.05 
1973 02 34.90  22.80  28.85 
1973 03 35.70  22.70  29.20 
1973 04 36.00  22.70  29.35 
1973 05 35.90  23.30  29.60 
1973 06 33.90  21.80  27.85 
1973 07 32.90  22.10  27.50 
1973 08 33.00  21.90  27.45 
1973 09 32.90  22.50  27.70 
1973 10 33.30  22.90  28.09 
1973 11 32.80  23.40  28.09 
1973 12 31.90  21.80  26.84 
1974 01 31.80  21.30  26.55 
1974 02 33.00  21.50  27.25 
1974 03 34.30  22.00  28.15 
1974 04 33.90  22.20  28.05 
1974 05 35.50  23.00  29.25 
1974 06 33.90  22.30  28.10 
1974 07 32.70  21.90  27.30 
1974 08 32.70  21.70  27.20 
1974 09 32.80  20.80  26.80 
1974 10 33.59  21.60  27.59 
1974 11 32.90  21.60  27.25 
1974 12 32.40  20.50  26.45 
1975 01 32.09  20.20  26.15 
1975 02 32.59  20.10  26.34 
1975 03 34.40  21.70  28.05 
1975 04 34.59  21.80  28.20 
1975 05 34.30  22.60  28.45 
1975 06 32.80  22.20  27.50 
1975 07 32.09  21.50  26.80 
1975 08 33.09  22.70  27.90 
1975 09 33.30  22.90  28.09 
1975 10 33.80  22.90  28.34 
1975 11 33.70  22.90  28.30 
1975 12 31.60  21.90  26.75 
1976 01 30.30  20.40  25.34 
1976 02 31.70  21.40  26.55 
1976 03 30.10  22.40  26.25 
1976 04 33.70  23.40  28.55 
1976 05 34.20  23.90  29.05 
1976 06 31.60  23.00  27.30 
1976 07 31.80  23.20  27.50 
1976 08 33.70  23.80  28.75 
1976 09 35.09  25.20  30.15 
1976 10 34.59  24.60  29.59 
1976 11 34.40  24.20  29.30 
1976 12 33.40  23.50  28.45 
1977 01 33.40  23.00  28.20 
1977 02 34.50  22.20  28.35 
1977 03 34.90  23.50  29.20 
1977 04 35.70  23.80  29.75 
1977 05 35.50  24.40  29.95 
1977 06 33.80  24.10  28.95 
1977 07 33.59  24.30  28.95 
1977 08 34.80  24.80  29.80 
1977 09 34.80  24.70  29.75 
1977 10 35.30  25.10  30.20 
1977 11 35.00  24.60  29.80 
1977 12 34.20  23.70  28.95 
1978 01 34.00  23.30  28.65 
1978 02 35.70  24.10  29.90 
1978 03 36.50  24.20  30.35 
1978 04 37.50  25.60  31.55 
1978 05 35.50  25.50  30.50 
1978 06 33.80  25.10  29.45 
1978 07 34.80  25.30  30.05 
1978 08 33.80  25.10  29.45 
1978 09 36.40  25.70  31.05 
1978 10 36.20  26.10  31.15 
1978 11 36.40  26.30  31.35 
1978 12 34.40  25.20  29.80 
1979 01 35.30  24.80  30.05 
1979 02 36.30  24.20  30.25 
1979 03 31.40  25.70  28.55 
1979 04 37.70  26.70  32.20 
1979 05 37.20  26.60  31.90 
1979 06 34.70  25.80  30.25 
1979 07 33.90  24.90  29.40 
1979 08 35.90  25.80  30.85 
1979 09 35.40  26.00  30.70 
1979 10 36.40  26.30  31.35 
1979 11 36.70  26.40  31.55 
1979 12 35.09  25.50  30.30 
1980 01 35.50  24.90  30.20 
1980 02 34.40  22.90  28.65 
1980 03 35.50  23.20  29.35 
1980 04 35.59  24.30  29.95 
1980 05 33.59  23.90  28.75 
1980 06 32.50  23.60  28.05 
1980 07 33.20  23.90  28.55 
1980 08 34.30  25.00  29.65 
1980 09 35.20  25.00  30.10 
1980 10 35.00  24.80  29.90 
1980 11 34.30  24.80  29.55 
1980 12 34.80  24.70  29.75 
1981 01 35.50  24.30  29.90 
1981 02 35.90  24.80  30.35 
1981 03 37.20  24.90  31.05 
1981 04 35.20  25.20  30.20 
1981 05 34.80  25.70  30.25 
1981 06 32.90  24.20  28.55 
1981 07 32.90  24.10  28.50 
1981 08 33.90  24.30  29.10 
1981 09 34.80  24.90  29.84 
1981 10 34.30  24.60  29.45 
1981 11 36.09  25.80  30.95 
1981 12 35.00  25.30  30.15 
1982 01 35.09  25.00  30.05 
1982 02 34.40  24.90  29.65 
1982 03 36.00  25.20  30.60 
1982 04 35.90  26.00  30.95 
1982 05 35.59  26.50  31.05 
1982 06 34.00  25.30  29.65 
1982 07 33.40  24.10  28.75 
1982 08 34.30  24.10  29.20 
1982 09 34.30  24.10  29.20 
1982 10 35.30  24.70  30.00 
1982 11 34.80  24.70  29.75 
1982 12 34.90  25.00  29.95 
1983 01 34.09  24.40  29.25 
1983 02 33.09  23.80  28.45 
1983 03 35.09  24.80  29.95 
1983 04 35.90  24.80  30.35 
1983 05 34.20  24.80  29.50 
1983 06 34.80  25.80  30.30 
1983 07 32.50  23.80  28.15 
1983 08 33.20  23.90  28.55 
1983 09 33.40  23.90  28.65 
1983 10 34.09  24.00  29.05 
1983 11 33.20  24.10  28.65 
1983 12 33.00  24.50  28.75 
1984 01 32.90  23.60  28.25 
1984 02 31.70  22.70  27.20 
1984 03 34.09  24.40  29.25 
1984 04 35.09  24.50  29.80 
1984 05 34.20  24.20  29.20 
1984 06 32.09  23.80  27.95 
1984 07 31.50  23.40  27.45 
1984 08 32.09  23.60  27.84 
1984 09 32.40  23.70  28.05 
1984 10 32.90  23.90  28.40 
1984 11 31.50  23.40  27.45 
1984 12 31.10  23.30  27.20 
1985 01 31.70  22.20  26.95 
1985 02 32.30  22.00  27.15 
1985 03 32.90  22.80  27.85 
1985 04 34.20  23.30  28.75 
1985 05 33.90  24.10  29.00 
1985 06 31.90  23.80  27.84 
1985 07 32.20  23.30  27.75 
1985 08 32.00  23.40  27.70 
1985 09 33.30  24.30  28.80 
1985 10 33.20  23.50  28.35 
1985 11 32.80  23.20  28.00 
1985 12 30.30  21.90  26.09 
1986 01 31.10  21.60  26.35 
1986 02 32.30  21.40  26.84 
1986 03 34.09  22.30  28.20 
1986 04 35.59  23.40  29.50 
1986 05 33.90  23.50  28.70 
1986 06 31.50  22.60  27.05 
1986 07 31.60  22.70  27.15 
1986 08 32.70  23.40  28.05 
1986 09 33.50  23.50  28.50 
1986 10 32.00  22.40  27.20 
1986 11 31.00  22.80  26.90 
1986 12 30.10  21.80  25.95 
1987 01 31.00  20.90  25.95 
1987 02 32.59  21.60  27.09 
1987 03 35.00  22.60  28.80 
1987 04 34.70  23.10  28.90 
1987 05 33.90  23.50  28.70 
1987 06 32.09  23.00  27.55 
1987 07 32.30  23.30  27.80 
1987 08 32.59  23.40  28.00 
1987 09 33.30  23.40  28.34 
1987 10 33.20  23.50  28.35 
1987 11 32.70  23.30  28.00 
1987 12 32.30  22.60  27.45 
1988 01 31.90  21.50  26.70 
1988 02 32.30  21.30  26.80 
1988 03 32.90  23.50  28.20 
1988 04 33.59  24.60  29.09 
1988 05 35.00  24.90  29.95 
1988 06 33.50  24.20  28.85 
1988 07 32.20  24.00  28.10 
1988 08 32.00  23.80  27.90 
1988 09 31.40  23.80  27.59 
1988 10 26.80  24.20  25.50 
1988 11 31.50  24.10  27.80 
1988 12 30.30  23.40  26.84 
1989 01 30.20  23.30  26.75 
1989 02 30.90  22.70  26.80 
1989 03 32.20  23.20  27.70 
1989 04 33.09  23.80  28.45 
1989 05 32.80  24.20  28.50 
1989 06 32.40  24.40  28.40 
1989 07 32.30  24.40  28.34 
1989 08 33.00  25.00  29.00 
1989 09 33.90  25.80  29.85 
1989 10 33.50  25.30  29.40 
1989 11 32.80  25.50  29.15 
1989 12 31.80  24.00  27.90 
1990 01 30.80  23.80  27.30 
1990 02 32.09  24.00  28.05 
1990 03 34.00  25.00  29.50 
1990 04 34.20  25.50  29.85 
1990 05 33.50  25.30  29.40 
1990 06 32.70  25.10  28.90 
1990 07 32.30  25.00  28.65 
1990 08 32.09  24.70  28.40 
1990 09 32.90  25.00  28.95 
1990 10 33.40  25.40  29.40 
1990 11 32.59  24.80  28.70 
1990 12 31.70  24.20  27.95 
