1931 01 31.50  20.40  25.95 
1931 02 32.00  20.40  26.20 
1931 03 32.09  20.50  26.30 
1931 04 32.00  20.60  26.30 
1931 05 31.50  20.60  26.05 
1931 06 30.40  20.20  25.30 
1931 07 30.00  19.70  24.85 
1931 08 29.60  19.90  24.75 
1931 09 30.70  19.79  25.25 
1931 10 31.10  20.00  25.55 
1931 11 30.80  19.79  25.30 
1931 12 30.80  20.10  25.45 
1950 01 30.50  21.40  25.95 
1950 02 32.09  21.80  26.95 
1950 03 31.00  21.90  26.45 
1950 04 31.90  22.30  27.09 
1950 05 31.00  22.50  26.75 
1950 06 30.40  21.30  25.84 
1950 07 28.60  20.29  24.45 
1950 08 28.80  20.40  24.59 
1950 09 29.90  20.10  25.00 
1950 10 30.00  20.50  25.25 
1950 11 30.20  20.50  25.35 
1950 12 30.20  20.50  25.35 
1951 01 30.70  20.60  25.65 
1951 02 31.30  20.00  25.65 
1951 03 31.30  20.90  26.09 
1951 04 32.00  20.90  26.45 
1951 05 31.10  21.00  26.05 
1951 06 29.70  20.80  25.25 
1951 07 29.50  20.20  24.85 
1951 08 29.20  20.90  25.05 
1951 09 30.50  20.29  25.40 
1951 10 30.50  21.10  25.80 
1951 11 29.80  20.90  25.34 
1951 12 30.70  21.10  25.90 
1952 01 31.40  21.60  26.50 
1952 02 30.80  21.00  25.90 
1952 03 31.50  21.00  26.25 
1952 04 31.90  21.50  26.70 
1952 05 31.10  21.20  26.15 
1952 06 30.30  20.80  25.55 
1952 07 28.90  19.70  24.30 
1952 08 29.10  19.29  24.20 
1952 09 29.90  18.79  24.34 
1952 10 30.90  19.70  25.30 
1952 12 30.50  19.70  25.10 
1953 01 30.40  19.70  25.05 
1953 02 31.50  21.60  26.55 
1953 03 31.90  21.00  26.45 
1953 05 31.00  20.50  25.75 
1953 06 29.80  20.20  25.00 
1953 07 29.50  20.10  24.80 
1953 08 29.10  19.90  24.50 
1953 09 30.30  20.50  25.40 
1953 10 29.70  20.29  25.00 
1953 11 29.70  19.90  24.80 
1953 12 31.20  20.20  25.70 
1954 01 30.40  19.70  25.05 
1954 02 30.00  20.20  25.10 
1954 03 31.40  20.50  25.95 
1954 04 30.60  20.50  25.55 
1954 05 30.70  20.70  25.70 
1954 06 29.30  20.10  24.70 
1954 07 27.90  19.29  23.59 
1954 08 28.90  19.60  24.25 
1954 09 29.60  19.40  24.50 
1954 10 29.70  19.70  24.70 
1954 11 29.30  20.00  24.65 
1954 12 29.40  20.29  24.84 
1955 01 29.80  20.29  25.05 
1955 02 30.70  20.60  25.65 
1955 03 30.80  20.40  25.59 
1955 04 30.20  20.40  25.30 
1955 05 30.90  20.90  25.90 
1955 06 29.20  20.40  24.80 
1955 07 28.70  19.79  24.25 
1955 08 28.30  19.60  23.95 
1955 09 29.30  20.00  24.65 
1955 10 30.00  20.40  25.20 
1955 11 30.40  20.10  25.25 
1955 12 29.20  20.40  24.80 
1956 01 29.70  19.70  24.70 
1956 02 31.40  19.90  25.65 
1956 03 30.80  20.40  25.59 
1956 04 31.00  20.60  25.80 
1956 05 30.50  20.40  25.45 
1956 06 29.40  20.60  25.00 
1956 07 28.30  19.60  23.95 
1956 08 29.30  20.29  24.80 
1956 09 30.00  19.40  24.70 
1956 10 29.90  20.10  25.00 
1956 11 29.90  20.40  25.15 
1956 12 30.10  20.50  25.30 
1957 01 30.00  19.70  24.85 
1957 02 31.60  20.40  26.00 
1957 03 30.60  20.50  25.55 
1957 04 30.90  20.80  25.84 
1957 05 31.30  21.50  26.40 
1957 06 29.90  21.10  25.50 
1957 07 29.30  20.40  24.84 
1957 08 29.50  20.50  25.00 
1957 09 30.50  20.40  25.45 
1957 10 29.70  20.20  24.95 
1957 11 30.80  20.90  25.84 
1957 12 30.30  20.80  25.55 
1958 01 30.90  21.60  26.25 
1958 02 31.30  20.70  26.00 
1958 03 32.00  21.30  26.65 
1958 04 31.60  22.10  26.85 
1958 05 31.10  21.30  26.20 
1958 06 29.40  20.20  24.80 
1958 07 28.70  19.70  24.20 
1958 08 29.10  20.29  24.70 
1958 09 29.90  20.60  25.25 
1958 10 30.60  20.80  25.70 
1958 11 29.70  20.50  25.10 
1958 12 30.40  21.00  25.70 
1959 01 30.20  21.00  25.60 
1959 02 31.20  21.50  26.35 
1959 03 31.50  21.30  26.40 
1959 04 30.80  20.90  25.84 
1959 05 30.90  21.40  26.15 
1959 06 29.80  21.00  25.40 
1959 07 28.80  20.80  24.80 
1959 08 28.80  20.50  24.65 
1959 09 29.20  20.50  24.85 
1959 10 30.50  21.00  25.75 
1959 11 29.30  20.60  24.95 
1959 12 30.20  21.00  25.60 
