1938 01 29.50  25.30  27.40 
1938 02 29.90  25.90  27.90 
1938 03 30.10  25.90  28.00 
1938 04 30.10  26.10  28.10 
1938 05 29.60  26.10  27.85 
1938 06 29.20  25.90  27.55 
1938 07 29.30  25.90  27.59 
1938 08 28.60  25.50  27.05 
1938 09 29.00  25.70  27.35 
1938 10 28.90  25.20  27.05 
1938 11 29.20  23.40  26.30 
1938 12 29.00  25.20  27.10 
1939 01 29.10  25.20  27.15 
1939 02 29.60  26.20  27.90 
1939 03 29.20  27.20  28.20 
1939 04 30.00  26.20  28.10 
1939 05 30.30  26.60  28.45 
1939 06 29.90  26.10  28.00 
1939 07 29.70  26.10  27.90 
1939 08 29.50  26.70  28.10 
1939 09 30.80  27.20  29.00 
1939 10 31.10  26.30  28.70 
1939 11 31.80  26.70  29.25 
1939 12 32.09  26.70  29.40 
1940 01 31.50  26.30  28.90 
1940 02 30.90  25.40  28.15 
1940 03 31.80  26.10  28.95 
1940 04 32.09  27.20  29.65 
1940 05 31.70  27.20  29.45 
1940 06 99.99  27.90 -99.99 
1940 07 30.20  26.60  28.40 
1940 08 30.30  26.10  28.20 
1940 09 30.90  25.60  28.25 
1940 10 31.50  26.60  29.05 
1940 11 31.80  25.80  28.80 
1940 12 99.99  25.40 -99.99 
1941 01 99.99  26.30 -99.99 
1941 02 99.99  26.10 -99.99 
1941 03 99.99  27.10 -99.99 
1941 04 99.99  26.70 -99.99 
1941 05 99.99  27.00 -99.99 
1941 06 99.99  26.60 -99.99 
1941 07 29.50  25.70  27.60 
1941 08 30.10  25.80  27.95 
1941 09 30.90  26.10  28.50 
1941 10 31.10  25.70  28.40 
1941 11 31.40  26.20  28.80 
1941 12 31.40  25.80  28.59 
1942 01 31.20  25.10  28.15 
1942 02 30.90  25.40  28.15 
1942 03 31.20  25.80  28.50 
1942 04 31.70  26.20  28.95 
1942 05 30.70  26.20  28.45 
1942 06 29.90  26.10  28.00 
1942 07 29.70  25.60  27.65 
1942 08 29.20  25.40  27.30 
1942 09 29.90  25.40  27.65 
1942 10 30.10  25.40  27.75 
1942 11 29.90  25.20  27.55 
1942 12 29.80  25.80  27.80 
1943 01 29.70  25.60  27.65 
1943 02 30.20  25.90  28.05 
1943 03 30.40  24.90  27.65 
1943 04 30.50  25.30  27.90 
1943 05 30.40  26.80  28.59 
1943 06 29.70  25.70  27.70 
1943 07 29.20  25.30  27.25 
1943 08 29.70  26.10  27.90 
1943 09 29.90  25.80  27.84 
1943 10 30.10  24.60  27.35 
1943 11 30.40  25.90  28.15 
1943 12 30.70  25.70  28.20 
1944 01 30.30  25.90  28.09 
1944 02 30.20  25.60  27.90 
1944 03 30.60  25.70  28.15 
1944 04 31.00  26.20  28.60 
1944 05 30.70  26.70  28.70 
1944 06 30.00  26.40  28.20 
1944 07 30.00  25.90  27.95 
1944 08 29.80  25.80  27.80 
1944 09 29.60  25.40  27.50 
1944 10 30.60  25.40  28.00 
1944 11 30.60  25.60  28.10 
1944 12 30.30  26.00  28.15 
1945 01 30.50  25.90  28.20 
1945 02 30.60  26.20  28.40 
1945 04 30.20  25.70  27.95 
1945 05 30.80  26.10  28.45 
1945 06 30.20  26.20  28.20 
1945 07 29.50  25.80  27.65 
1945 08 29.50  25.60  27.55 
1945 09 29.70  26.20  27.95 
1945 11 30.40  25.30  27.84 
1945 12 30.40  25.30  27.84 
1946 01 30.40  25.20  27.80 
1946 02 30.90  26.00  28.45 
1946 03 32.09  25.30  28.70 
1946 04 31.30  25.60  28.45 
1946 05 31.10  26.00  28.55 
1946 06 29.90  25.80  27.84 
1946 07 30.00  25.20  27.60 
1946 08 99.99  24.90 -99.99 
1946 09 99.99  24.30 -99.99 
1946 10 99.99  24.80 -99.99 
1946 11 99.99  25.60 -99.99 
1946 12 99.99  25.10 -99.99 
1948 06 30.70  27.60  29.15 
1948 07 30.20  24.60  27.40 
1948 08 99.99  24.80 -99.99 
1948 09 99.99  24.40 -99.99 
1949 06 31.10  24.10  27.60 
1949 07 30.70  23.80  27.25 
1949 08 29.80  23.10  26.45 
1949 09 30.10  24.80  27.45 
1949 10 29.90  24.30  27.09 
1949 11 29.80  24.30  27.05 
1949 12 30.10  25.00  27.55 
1950 01 30.10  24.40  27.25 
1950 02 29.70  24.50  27.10 
1950 03 30.10  24.60  27.35 
1950 07 28.30  24.40  26.34 
1950 08 28.10  24.80  26.45 
1950 09 28.40  25.00  26.70 
1950 10 28.20  24.80  26.50 
1950 11 28.40  24.40  26.40 
1950 12 28.30  24.70  26.50 
1951 01 28.60  25.50  27.05 
1951 02 28.90  25.40  27.15 
1951 03 29.80  25.60  27.70 
1951 04 30.10  25.10  27.60 
1951 05 31.20  25.90  28.55 
1951 06 30.00  25.80  27.90 
1951 07 30.60  25.30  27.95 
1951 08 30.10  25.30  27.70 
1951 09 30.30  25.40  27.84 
1951 10 30.40  25.50  27.95 
1951 11 30.40  24.80  27.59 
1951 12 30.80  25.50  28.15 
1952 01 30.10  25.40  27.75 
1952 02 30.90  26.10  28.50 
1952 03 30.80  25.70  28.25 
1952 04 31.50  25.90  28.70 
1952 05 30.90  26.30  28.59 
1952 06 30.00  25.60  27.80 
1952 07 28.90  24.90  26.90 
1952 08 29.30  25.70  27.50 
1952 09 29.70  25.90  27.80 
1952 10 29.60  26.10  27.85 
1952 11 30.00  25.40  27.70 
1952 12 30.60  25.20  27.90 
1953 01 30.10  25.50  27.80 
1953 02 30.70  25.60  28.15 
1953 03 30.20  26.20  28.20 
1953 04 31.40  26.60  29.00 
1953 05 30.40  26.10  28.25 
1953 06 30.20  26.50  28.35 
1953 07 29.40  25.40  27.40 
1953 08 29.80  25.70  27.75 
1953 09 30.00  25.90  27.95 
1953 10 29.90  25.90  27.90 
1953 11 30.40  26.10  28.25 
1953 12 30.70  26.10  28.40 
1954 01 30.00  25.90  27.95 
1954 02 30.00  25.30  27.65 
1954 03 30.10  26.40  28.25 
1954 04 30.20  26.10  28.15 
1954 05 29.80  26.00  27.90 
1954 06 29.70  25.80  27.75 
1954 07 29.20  25.60  27.40 
1954 08 29.70  25.30  27.50 
1954 09 29.30  24.90  27.09 
1954 10 29.60  25.30  27.45 
1954 11 29.80  25.40  27.59 
1954 12 29.50  25.50  27.50 
1955 01 29.40  25.30  27.34 
1955 02 29.90  25.60  27.75 
1955 03 30.30  25.60  27.95 
1955 04 30.70  26.10  28.40 
1955 05 30.30  26.20  28.25 
1955 06 30.00  25.20  27.60 
1955 07 29.50  25.10  27.30 
1955 08 29.20  24.70  26.95 
1955 09 29.50  25.20  27.35 
1955 10 29.40  24.80  27.09 
1955 11 29.30  24.90  27.09 
1955 12 29.30  25.30  27.30 
1956 01 29.30  25.00  27.15 
1956 02 29.50  25.30  27.40 
1956 03 30.00  25.60  27.80 
1956 04 30.40  26.10  28.25 
1956 05 30.20  25.70  27.95 
1956 06 29.60  25.20  27.40 
1956 07 29.50  25.10  27.30 
1956 08 29.40  25.20  27.30 
1956 09 29.80  24.90  27.34 
1956 10 29.50  25.40  27.45 
1956 11 30.00  25.10  27.55 
1956 12 30.00  25.20  27.60 
1957 01 29.40  25.40  27.40 
1957 02 29.30  26.10  27.70 
1957 03 29.90  26.00  27.95 
1957 04 30.40  26.20  28.30 
1957 05 31.10  26.60  28.85 
1957 06 30.30  26.20  28.25 
1957 07 30.00  26.30  28.15 
1957 08 29.80  25.90  27.84 
1957 09 29.70  25.40  27.55 
1957 10 30.00  25.60  27.80 
1957 11 30.50  26.20  28.35 
1957 12 30.60  26.30  28.45 
1958 01 30.70  25.30  28.00 
1958 02 30.70  26.10  28.40 
1958 03 30.90  25.90  28.40 
1958 04 31.20  26.30  28.75 
1958 05 31.20  27.40  29.30 
1958 06 30.70  26.30  28.50 
1958 07 29.90  26.20  28.05 
1958 08 28.50  24.30  26.40 
1958 09 29.50  25.50  27.50 
1958 10 29.90  25.60  27.75 
1958 11 29.80  25.30  27.55 
1958 12 29.70  25.40  27.55 
1959 01 30.10  26.00  28.05 
1959 02 28.90  25.50  27.20 
1959 03 30.10  26.40  28.25 
1959 04 30.60  26.70  28.65 
1959 05 30.20  26.20  28.20 
1959 06 30.20  26.20  28.20 
1959 07 29.40  25.70  27.55 
1959 08 29.10  25.50  27.30 
1959 09 29.00  25.90  27.45 
1959 10 29.30  25.40  27.34 
1959 11 29.40  25.70  27.55 
1959 12 29.40  25.70  27.55 
1960 01 28.90  25.30  27.09 
1960 02 30.00  25.30  27.65 
1960 03 29.90  25.30  27.59 
1960 04 30.20  26.40  28.30 
1960 05 30.20  27.40  28.80 
1960 06 29.60  25.40  27.50 
1960 07 29.60  25.50  27.55 
1960 08 29.40  25.60  27.50 
1960 09 29.60  25.80  27.70 
1960 10 29.80  25.60  27.70 
1960 11 29.80  25.50  27.65 
1960 12 29.70  26.10  27.90 
1961 01 29.90  26.20  28.05 
1961 02 29.40  24.90  27.15 
1961 03 29.60  25.10  27.35 
1961 04 31.10  26.10  28.60 
1961 05 30.80  26.90  28.84 
1961 06 30.10  25.80  27.95 
1961 07 29.70  25.90  27.80 
1961 08 30.00  25.40  27.70 
1961 09 28.70  25.30  27.00 
1961 10 29.40  25.60  27.50 
1961 11 29.70  25.30  27.50 
1961 12 29.20  25.90  27.55 
1962 01 28.80  26.20  27.50 
1962 02 29.40  25.40  27.40 
1962 03 29.60  26.40  28.00 
1962 04 29.70  26.30  28.00 
1962 05 29.40  26.20  27.80 
1962 06 29.10  25.20  27.15 
1962 07 28.80  25.40  27.09 
1962 08 28.70  25.70  27.20 
1962 09 28.40  25.40  26.90 
1962 10 29.00  25.60  27.30 
1962 11 29.40  25.30  27.34 
1962 12 30.20  25.80  28.00 
1963 01 29.20  25.80  27.50 
1963 02 29.40  25.60  27.50 
1963 03 29.40  26.80  28.09 
1963 04 29.70  25.60  27.65 
1963 05 29.80  26.10  27.95 
1963 06 29.10  25.20  27.15 
1963 07 28.70  25.40  27.05 
1963 08 28.70  25.40  27.05 
1963 09 29.20  25.50  27.35 
1963 10 29.60  25.80  27.70 
1963 11 29.80  25.10  27.45 
1963 12 30.30  25.80  28.05 
1964 01 29.20  25.60  27.40 
1964 02 29.60  25.80  27.70 
1964 03 29.80  26.10  27.95 
1964 04 29.40  26.20  27.80 
1964 05 29.50  25.90  27.70 
1964 06 28.60  25.10  26.85 
1964 07 28.30  25.20  26.75 
1964 08 27.80  25.20  26.50 
1964 09 27.90  25.20  26.55 
1964 10 28.10  25.10  26.60 
1964 11 28.70  24.80  26.75 
1964 12 28.70  24.80  26.75 
1965 01 28.40  25.00  26.70 
1965 02 28.70  25.60  27.15 
1965 03 29.30  25.40  27.34 
1965 04 29.50  25.80  27.65 
1965 05 29.40  26.10  27.75 
1965 06 29.10  25.60  27.35 
1965 07 28.90  25.60  27.25 
1965 08 29.00  25.20  27.10 
1965 09 29.10  26.00  27.55 
1965 10 29.90  26.20  28.05 
1965 11 30.70  26.00  28.35 
1965 12 30.30  26.40  28.34 
1966 01 30.60  26.30  28.45 
1966 02 30.40  26.20  28.30 
1966 03 30.50  26.10  28.30 
1966 04 30.40  26.30  28.34 
1966 05 30.30  26.10  28.20 
1966 06 29.40  25.30  27.34 
1966 07 29.10  26.00  27.55 
1966 08 28.90  25.90  27.40 
1966 09 28.80  25.10  26.95 
1966 10 28.90  26.00  27.45 
1966 11 29.40  26.10  27.75 
1966 12 29.80  25.60  27.70 
1967 01 29.10  26.30  27.70 
1967 02 29.20  25.30  27.25 
1967 03 29.10  25.60  27.35 
1967 04 29.60  25.40  27.50 
1967 05 29.60  26.60  28.10 
1967 06 28.50  25.90  27.20 
1967 07 28.10  25.10  26.60 
1967 08 28.10  25.10  26.60 
1967 09 28.10  24.70  26.40 
1967 10 28.70  25.10  26.90 
1967 11 29.40  25.30  27.34 
1967 12 28.90  24.70  26.80 
1968 01 28.70  24.50  26.60 
1968 02 29.20  24.20  26.70 
1968 03 29.10  25.80  27.45 
1968 04 29.80  25.40  27.59 
1968 05 29.30  25.10  27.20 
1968 06 28.40  24.80  26.59 
1968 07 28.40  25.10  26.75 
1968 08 29.60  25.10  27.35 
1968 09 28.70  25.30  27.00 
1968 10 29.00  25.40  27.20 
1968 11 29.40  25.10  27.25 
1968 12 29.30  25.90  27.59 
1969 01 30.30  26.30  28.30 
1969 02 30.10  25.70  27.90 
1969 03 30.30  26.10  28.20 
1969 04 30.40  26.90  28.65 
1969 05 30.40  26.90  28.65 
1969 06 29.70  26.70  28.20 
1969 07 29.20  26.40  27.80 
1969 08 29.00  25.40  27.20 
1969 09 29.30  25.70  27.50 
1969 10 29.70  25.80  27.75 
1969 11 30.20  26.10  28.15 
1969 12 30.20  26.60  28.40 
1970 01 30.20  26.40  28.30 
1970 02 30.30  26.30  28.30 
1970 03 29.60  25.70  27.65 
1970 04 30.20  26.60  28.40 
1970 05 30.30  26.00  28.15 
1970 06 29.20  26.10  27.65 
1970 07 29.30  25.30  27.30 
1970 08 28.60  25.10  26.85 
1970 09 28.70  25.20  26.95 
1970 10 28.70  25.90  27.30 
1970 11 28.70  25.20  26.95 
1970 12 28.20  25.80  27.00 
1971 01 28.80  24.50  26.65 
1971 02 28.00  23.00  25.50 
1971 03 28.50  26.00  27.25 
1971 04 28.70  25.70  27.20 
1971 05 28.80  25.40  27.09 
1971 06 28.50  24.90  26.70 
1971 07 28.20  25.10  26.65 
1971 08 28.10  24.80  26.45 
1971 09 27.90  24.60  26.25 
1971 10 28.30  25.30  26.80 
1971 11 28.60  25.00  26.80 
1971 12 27.40  24.50  25.95 
1972 01 28.20  24.30  26.25 
1972 02 28.70  25.10  26.90 
1972 03 29.60  25.40  27.50 
1972 04 30.10  25.50  27.80 
1972 05 29.90  25.50  27.70 
1972 06 29.80  25.60  27.70 
1972 07 29.40  25.20  27.30 
1972 08 29.10  25.50  27.30 
1972 09 29.20  25.00  27.10 
1972 10 30.00  25.00  27.50 
1972 11 30.40  25.80  28.09 
1972 12 30.90  25.30  28.09 
1973 01 30.50  25.40  27.95 
1973 02 30.60  26.00  28.30 
1973 03 30.60  26.10  28.35 
1973 04 30.80  25.90  28.34 
1973 05 29.50  25.70  27.60 
1973 06 30.00  24.90  27.45 
1973 07 29.50  25.40  27.45 
1973 08 29.20  24.80  27.00 
1973 09 28.90  24.80  26.84 
1973 10 29.20  24.80  27.00 
1973 11 28.40  24.50  26.45 
1973 12 28.50  24.20  26.35 
1974 01 28.60  25.60  27.10 
1974 02 28.80  26.10  27.45 
1974 03 29.20  26.20  27.70 
1974 04 29.60  26.10  27.85 
1974 05 30.00  26.20  28.10 
1974 06 29.50  26.10  27.80 
1974 07 29.30  26.10  27.70 
1974 08 28.80  25.30  27.05 
1974 09 29.50  25.50  27.50 
1974 10 29.50  25.20  27.35 
1974 11 29.90  25.20  27.55 
1974 12 30.00  25.50  27.75 
1975 01 29.80  25.10  27.45 
1975 02 29.80  26.20  28.00 
1975 03 30.00  25.60  27.80 
1975 04 29.90  26.00  27.95 
1975 05 30.10  25.80  27.95 
1975 06 29.40  26.60  28.00 
1975 07 28.20  25.70  26.95 
1975 08 28.30  25.00  26.65 
1975 09 28.50  24.80  26.65 
1975 10 28.50  24.50  26.50 
1975 11 28.40  25.30  26.84 
1975 12 28.40  25.70  27.05 
1976 01 28.00  24.80  26.40 
1976 02 28.70  24.60  26.65 
1976 03 29.10  24.90  27.00 
1976 04 29.40  25.20  27.30 
1976 05 29.30  25.30  27.30 
1976 06 29.40  25.10  27.25 
1976 07 29.40  24.60  27.00 
1976 08 29.50  25.80  27.65 
1976 09 30.20  25.10  27.65 
1976 10 30.40  25.90  28.15 
1976 11 30.30  25.80  28.05 
1976 12 30.80  25.40  28.09 
1977 01 30.50  25.80  28.15 
1977 02 30.40  26.30  28.34 
1977 03 30.90  25.40  28.15 
1977 04 31.20  26.30  28.75 
1977 05 30.80  26.30  28.55 
1977 06 30.50  26.00  28.25 
1977 07 30.30  26.20  28.25 
1977 08 30.20  25.70  27.95 
1977 09 30.20  25.60  27.90 
1977 10 30.70  25.60  28.15 
1977 11 30.50  25.90  28.20 
1977 12 30.20  25.60  27.90 
1978 01 29.60  26.30  27.95 
1978 02 30.10  25.40  27.75 
1978 03 29.80  26.40  28.09 
1978 04 30.40  26.50  28.45 
1978 05 30.10  26.20  28.15 
1978 06 29.90  26.40  28.15 
1978 07 29.30  25.70  27.50 
1978 08 28.90  25.50  27.20 
1978 09 29.00  25.10  27.05 
1978 10 29.60  25.40  27.50 
1978 11 29.90  25.80  27.84 
1978 12 29.20  25.60  27.40 
1979 01 29.00  25.70  27.35 
1979 02 29.70  26.20  27.95 
1979 03 30.10  26.40  28.25 
1979 04 30.90  26.80  28.84 
1979 05 30.50  26.60  28.55 
1979 06 30.00  26.40  28.20 
1979 07 29.90  25.50  27.70 
1979 08 29.70  26.20  27.95 
1979 09 29.60  25.60  27.60 
1979 10 29.90  25.70  27.80 
1979 11 30.50  26.60  28.55 
1979 12 30.40  25.60  28.00 
1980 01 30.20  26.20  28.20 
1980 02 30.60  25.90  28.25 
1980 03 30.40  26.20  28.30 
1980 04 30.80  26.70  28.75 
1980 05 30.50  27.10  28.80 
1980 06 30.40  27.10  28.75 
1980 07 29.90  27.10  28.50 
1980 08 29.20  26.50  27.85 
1980 09 29.50  25.60  27.55 
1980 10 29.80  25.60  27.70 
1980 11 30.30  25.40  27.84 
1980 12 30.20  26.40  28.30 
1981 01 30.10  25.80  27.95 
1981 02 29.40  25.10  27.25 
1981 03 29.40  25.00  27.20 
1981 04 30.10  27.00  28.55 
1981 05 30.00  26.80  28.40 
1981 06 29.60  26.20  27.90 
1981 07 29.30  25.70  27.50 
1981 08 29.10  25.50  27.30 
1981 09 28.90  25.70  27.30 
1981 10 30.20  26.10  28.15 
1981 11 29.80  26.00  27.90 
1981 12 29.70  26.30  28.00 
1982 01 29.60  26.00  27.80 
1982 02 29.60  25.90  27.75 
1982 03 29.90  27.00  28.45 
1982 04 30.50  26.90  28.70 
1982 05 30.20  26.90  28.55 
1982 06 30.50  26.40  28.45 
1982 07 29.90  26.20  28.05 
1982 08 29.80  26.10  27.95 
1982 09 30.20  26.20  28.20 
1982 10 30.60  25.70  28.15 
1982 11 30.80  26.00  28.40 
1982 12 31.20  25.70  28.45 
1983 01 31.30  25.60  28.45 
1983 02 31.40  26.00  28.70 
1983 03 31.40  26.00  28.70 
1983 04 31.10  26.20  28.65 
1983 05 30.80  27.00  28.90 
1983 06 30.30  26.60  28.45 
1983 07 29.50  26.20  27.85 
1983 08 30.00  25.30  27.65 
1983 09 29.20  25.70  27.45 
1983 10 29.60  26.20  27.90 
1983 11 29.70  26.00  27.85 
1983 12 29.90  25.90  27.90 
1984 01 29.90  25.80  27.84 
1984 02 30.20  25.80  28.00 
1984 03 30.40  25.70  28.05 
1984 04 30.50  26.30  28.40 
1984 05 30.60  26.50  28.55 
1984 06 30.00  26.00  28.00 
1984 07 29.50  25.40  27.45 
1984 08 29.00  25.10  27.05 
1984 09 29.60  25.60  27.60 
1984 10 29.80  25.70  27.75 
1984 11 29.60  25.30  27.45 
1984 12 29.80  25.60  27.70 
1985 01 29.60  25.50  27.55 
1985 02 28.90  24.80  26.84 
1985 03 29.70  25.10  27.40 
1985 04 29.90  25.90  27.90 
1985 05 30.00  25.70  27.85 
1985 06 30.00  25.80  27.90 
1985 07 29.30  25.10  27.20 
1985 08 29.20  25.20  27.20 
1985 09 29.50  25.70  27.60 
1985 10 29.80  25.30  27.55 
1985 11 30.00  25.40  27.70 
1985 12 29.70  25.20  27.45 
1986 01 29.50  25.30  27.40 
1986 02 30.00  25.90  27.95 
1986 03 29.60  25.60  27.60 
1986 04 29.70  26.00  27.85 
1986 05 30.40  26.30  28.34 
1986 06 29.80  26.60  28.20 
1986 07 29.70  25.70  27.70 
1986 08 29.70  25.40  27.55 
1986 09 29.50  25.80  27.65 
1986 10 29.80  25.60  27.70 
1986 11 30.60  25.80  28.20 
1986 12 30.50  25.60  28.05 
1987 01 30.20  25.60  27.90 
1987 02 30.60  26.00  28.30 
1987 03 31.20  25.60  28.40 
1987 04 30.90  25.50  28.20 
1987 05 31.40  26.30  28.84 
1987 06 31.00  26.30  28.65 
1987 07 30.40  25.40  27.90 
1987 08 29.80  25.30  27.55 
1987 09 30.60  25.70  28.15 
1987 10 30.80  25.40  28.09 
1987 11 30.90  26.60  28.75 
1987 12 30.60  25.70  28.15 
1988 01 30.20  25.50  27.85 
1988 02 29.90  25.50  27.70 
1988 03 30.80  26.80  28.80 
1988 04 30.10  26.50  28.30 
1988 05 30.40  26.30  28.34 
1988 06 30.00  25.90  27.95 
1988 07 29.30  25.60  27.45 
1988 08 29.00  25.70  27.35 
1988 09 28.80  26.10  27.45 
1988 10 28.30  25.50  26.90 
1988 11 28.60  25.70  27.15 
1988 12 28.80  25.50  27.15 
1989 01 28.80  25.90  27.34 
1989 02 29.00  25.80  27.40 
1989 03 29.30  25.50  27.40 
1989 04 30.00  26.40  28.20 
1989 05 29.70  26.30  28.00 
1989 06 29.50  26.00  27.75 
1989 07 28.90  25.60  27.25 
1989 08 29.30  25.70  27.50 
1989 09 29.20  25.50  27.35 
1989 10 29.10  26.10  27.60 
1989 11 29.50  25.40  27.45 
1989 12 29.70  26.00  27.85 
1990 01 29.60  25.70  27.65 
1990 02 29.60  25.20  27.40 
1990 03 29.90  25.80  27.84 
1990 04 30.20  26.90  28.55 
1990 05 30.10  26.20  28.15 
1990 06 29.70  26.30  28.00 
1990 07 29.30  25.70  27.50 
1990 08 29.50  25.80  27.65 
1990 09 29.50  26.20  27.85 
1990 10 30.00  26.20  28.10 
1990 11 30.10  26.10  28.10 
1990 12 29.80  25.80  27.80 
1991 01 30.20  25.90  28.05 
1991 02 29.90  26.10  28.00 
1991 03 30.60  26.50  28.55 
1991 04 30.80  26.50  28.65 
1991 05 30.90  26.20  28.55 
1991 06 30.60  25.80  28.20 
1991 07 29.80  26.20  28.00 
1991 08 29.90  26.50  28.20 
1991 09 30.00  25.90  27.95 
1991 10 30.30  25.70  28.00 
1991 11 30.20  25.50  27.85 
1991 12 30.40  25.90  28.15 
1992 01 30.90  26.20  28.55 
1992 02 31.00  26.20  28.60 
1992 03 30.90  25.90  28.40 
1992 04 30.80  26.10  28.45 
1992 05 30.70  26.40  28.55 
1992 06 30.80  26.40  28.59 
1992 07 30.20  26.00  28.10 
1992 08 29.70  25.80  27.75 
1992 09 29.80  25.30  27.55 
1992 10 29.80  25.70  27.75 
1992 11 30.00  25.90  27.95 
1992 12 29.90  25.60  27.75 
1993 01 30.40  25.50  27.95 
1993 02 30.00  25.30  27.65 
1993 03 30.50  26.20  28.35 
