1952 10 99.99 -99.99  23.60 
1952 11 99.99 -99.99  16.10 
1952 12 99.99 -99.99  10.10 
1953 01 99.99 -99.99   8.70 
1953 02 99.99 -99.99  13.10 
1953 03 99.99 -99.99  19.50 
1953 04 99.99 -99.99  23.80 
1953 05 99.99 -99.99  29.40 
1953 06 99.99 -99.99  32.20 
1953 07 99.99 -99.99  34.09 
1953 08 99.99 -99.99  31.60 
1953 09 99.99 -99.99  28.60 
1953 10 99.99 -99.99  23.10 
1953 11 99.99 -99.99  16.79 
1953 12 99.99 -99.99  12.20 
1954 02 99.99 -99.99  11.90 
1954 03 99.99 -99.99  16.10 
1954 04 99.99 -99.99  22.60 
1954 05 99.99 -99.99  31.80 
1954 06 99.99 -99.99  33.40 
1954 07 99.99 -99.99  32.30 
1954 08 99.99 -99.99  31.30 
1954 09 99.99 -99.99  29.80 
1954 10 99.99 -99.99  21.10 
1954 11 99.99 -99.99  15.40 
1954 12 99.99 -99.99   9.60 
1955 01 99.99 -99.99   9.20 
1955 02 99.99 -99.99  13.50 
1955 03 99.99 -99.99  18.20 
1955 04 99.99 -99.99  21.60 
1955 05 99.99 -99.99  25.80 
1955 06 99.99 -99.99  34.20 
1956 01 99.99 -99.99   8.80 
1956 04 99.99 -99.99  23.70 
1956 05 99.99 -99.99  31.90 
1956 07 99.99 -99.99  29.80 
1956 09 99.99 -99.99  30.40 
1956 10 99.99 -99.99  22.10 
1956 11 99.99 -99.99  15.60 
1956 12 99.99 -99.99   9.70 
1957 05 99.99 -99.99  25.70 
1957 06 99.99 -99.99  32.20 
1957 07 99.99 -99.99  33.80 
1957 08 99.99 -99.99  31.40 
1958 02 99.99 -99.99  12.10 
1958 05 99.99 -99.99  28.90 
1958 06 99.99 -99.99  33.80 
1958 07 99.99 -99.99  32.20 
1958 11 99.99 -99.99  12.90 
1959 09 99.99 -99.99  29.40 
1959 10 99.99 -99.99  25.40 
1959 11 99.99 -99.99  15.80 
1960 01 99.99 -99.99   9.39 
1960 03 99.99 -99.99  15.80 
1960 04 99.99 -99.99  21.10 
1960 05 99.99 -99.99  28.80 
1960 06 99.99 -99.99  34.50 
1960 07 99.99 -99.99  32.09 
1960 08 99.99 -99.99  31.70 
1960 09 99.99 -99.99  29.30 
1960 10 99.99 -99.99  24.20 
1960 11 99.99 -99.99  16.40 
1960 12 99.99 -99.99  11.10 
1961 05 99.99 -99.99  29.20 
1961 06 99.99 -99.99  34.00 
1961 07 99.99 -99.99  31.50 
1961 08 99.99 -99.99  29.80 
1961 09 99.99 -99.99  29.60 
1961 10 99.99 -99.99  22.70 
1961 11 99.99 -99.99  14.20 
1962 03 99.99 -99.99  17.60 
1962 04 99.99 -99.99  22.60 
1962 05 99.99 -99.99  28.50 
1962 06 99.99 -99.99  33.40 
1962 07 99.99 -99.99  32.59 
1962 10 99.99 -99.99  22.60 
1962 11 99.99 -99.99  15.60 
1962 12 99.99 -99.99  10.00 
1963 01 99.99 -99.99   9.50 
1963 02 99.99 -99.99  14.60 
1963 03 99.99 -99.99  16.20 
1963 04 99.99 -99.99  22.20 
1963 05 99.99 -99.99  26.20 
1963 06 99.99 -99.99  35.50 
1963 07 99.99 -99.99  34.40 
1963 08 99.99 -99.99  31.30 
1963 09 99.99 -99.99  28.30 
1963 10 99.99 -99.99  25.10 
1963 11 99.99 -99.99  17.20 
1963 12 99.99 -99.99  11.20 
1964 03 99.99 -99.99  17.20 
1964 04 99.99 -99.99  22.90 
1964 05 99.99 -99.99  28.10 
1964 06 99.99 -99.99  32.50 
1964 07 99.99 -99.99  31.10 
1964 10 99.99 -99.99  23.40 
1964 11 99.99 -99.99  15.30 
1964 12 99.99 -99.99  10.90 
1965 01 99.99 -99.99  10.70 
1965 02 99.99 -99.99  10.60 
1965 03 99.99 -99.99  16.29 
1965 04 99.99 -99.99  18.70 
1965 05 99.99 -99.99  25.60 
1965 06 99.99 -99.99  31.30 
1965 07 99.99 -99.99  31.60 
1965 08 99.99 -99.99  30.10 
