1953 01 99.99 -99.99  12.20 
1953 07 99.99 -99.99  26.40 
1953 08 99.99 -99.99  26.80 
1953 09 99.99 -99.99  24.70 
1953 10 99.99 -99.99  23.00 
1953 11 99.99 -99.99  16.50 
1955 01 99.99 -99.99  13.70 
1955 02 99.99 -99.99  15.70 
1955 03 99.99 -99.99  16.20 
1955 04 99.99 -99.99  19.00 
1955 05 99.99 -99.99  20.50 
1955 06 99.99 -99.99  24.40 
1955 07 99.99 -99.99  25.80 
1955 08 99.99 -99.99  25.80 
1955 09 99.99 -99.99  24.90 
1955 10 99.99 -99.99  23.40 
1955 11 99.99 -99.99  18.50 
1955 12 99.99 -99.99  14.50 
1956 01 99.99 -99.99  13.00 
1956 02 99.99 -99.99  15.10 
1956 03 99.99 -99.99  14.30 
1956 04 99.99 -99.99  17.50 
1956 05 99.99 -99.99  19.50 
1956 06 99.99 -99.99  23.30 
1956 07 99.99 -99.99  25.40 
1956 08 99.99 -99.99  26.50 
1956 09 99.99 -99.99  24.90 
1959 05 99.99 -99.99  21.00 
1959 06 99.99 -99.99  23.70 
1959 07 99.99 -99.99  24.80 
1959 08 99.99 -99.99  25.80 
1959 09 99.99 -99.99  24.40 
1959 10 99.99 -99.99  21.50 
1959 11 99.99 -99.99  18.79 
1959 12 99.99 -99.99  15.70 
1960 01 99.99 -99.99  14.00 
1960 02 99.99 -99.99  14.40 
1960 03 99.99 -99.99  16.00 
1960 04 99.99 -99.99  18.79 
1960 05 99.99 -99.99  22.50 
1960 06 99.99 -99.99  23.60 
1960 07 99.99 -99.99  25.60 
1960 08 99.99 -99.99  26.30 
1960 09 99.99 -99.99  25.20 
1960 10 99.99 -99.99  23.20 
1960 11 99.99 -99.99  20.29 
1960 12 99.99 -99.99  17.90 
1961 04 99.99 -99.99  18.10 
1961 05 99.99 -99.99  21.40 
1961 06 99.99 -99.99  24.60 
1961 07 99.99 -99.99  25.80 
1961 08 99.99 -99.99  26.50 
1961 09 99.99 -99.99  24.40 
1961 10 99.99 -99.99  21.70 
1961 11 99.99 -99.99  18.20 
1961 12 99.99 -99.99  15.00 
1962 01 99.99 -99.99  14.20 
1962 02 99.99 -99.99  13.60 
1962 03 99.99 -99.99  17.20 
1962 04 99.99 -99.99  17.50 
1962 05 99.99 -99.99  21.10 
1962 06 99.99 -99.99  24.30 
1962 07 99.99 -99.99  26.00 
1962 08 99.99 -99.99  27.30 
1962 09 99.99 -99.99  26.00 
1962 10 99.99 -99.99  23.70 
1962 11 99.99 -99.99  21.50 
1962 12 99.99 -99.99  15.90 
1963 01 99.99 -99.99  14.80 
1963 02 99.99 -99.99  15.60 
1963 03 99.99 -99.99  15.30 
1963 04 99.99 -99.99  18.60 
1963 05 99.99 -99.99  21.30 
1963 06 99.99 -99.99  23.60 
1963 07 99.99 -99.99  26.20 
1963 08 99.99 -99.99  27.00 
1963 09 99.99 -99.99  26.20 
1963 10 99.99 -99.99  23.70 
1963 11 99.99 -99.99  19.40 
1963 12 99.99 -99.99  14.70 
1964 01 99.99 -99.99  12.20 
1964 02 99.99 -99.99  13.10 
1964 03 99.99 -99.99  16.40 
1964 04 99.99 -99.99  17.40 
1964 05 99.99 -99.99  18.90 
1964 06 99.99 -99.99  22.80 
1964 07 99.99 -99.99  24.40 
1964 08 99.99 -99.99  25.10 
1964 09 99.99 -99.99  23.70 
1964 10 99.99 -99.99  21.40 
1964 11 99.99 -99.99  18.40 
1964 12 99.99 -99.99  15.10 
1965 01 99.99 -99.99  13.20 
1965 02 99.99 -99.99  13.80 
1965 03 99.99 -99.99  16.29 
1965 04 99.99 -99.99  19.40 
1965 05 99.99 -99.99  19.79 
1965 06 99.99 -99.99  23.90 
1965 07 99.99 -99.99  23.20 
1965 08 99.99 -99.99  26.60 
1965 09 99.99 -99.99  25.30 
1965 10 99.99 -99.99  22.30 
1965 11 99.99 -99.99  18.40 
1965 12 99.99 -99.99  15.40 
1966 01 99.99 -99.99  14.40 
1966 02 99.99 -99.99  15.10 
1966 03 99.99 -99.99  16.20 
1966 04 99.99 -99.99  19.90 
1966 05 99.99 -99.99  20.70 
1966 06 99.99 -99.99  24.00 
1966 07 99.99 -99.99  26.10 
1966 08 99.99 -99.99  26.40 
1966 09 99.99 -99.99  25.40 
1966 10 99.99 -99.99  20.00 
1966 11 99.99 -99.99  22.20 
1966 12 99.99 -99.99  16.29 
1967 01 99.99 -99.99  12.80 
1967 02 99.99 -99.99  13.00 
1967 03 99.99 -99.99  14.10 
1967 04 99.99 -99.99  17.40 
