1956 01 99.99 -99.99 -22.70 
1956 05 99.99 -99.99 -43.40 
1956 06 99.99 -99.99 -43.60 
1956 07 99.99 -99.99 -47.80 
1956 08 99.99 -99.99 -51.30 
1956 09 99.99 -99.99 -43.60 
1956 10 99.99 -99.99 -39.70 
1956 11 99.99 -99.99 -31.60 
1956 12 99.99 -99.99 -21.50 
1957 01 99.99 -99.99 -22.70 
1957 02 99.99 -99.99 -30.50 
1957 03 99.99 -99.99 -39.59 
1957 04 99.99 -99.99 -38.20 
1957 05 99.99 -99.99 -44.00 
1957 06 99.99 -99.99 -43.70 
1957 07 99.99 -99.99 -48.90 
1957 08 99.99 -99.99 -44.40 
1957 09 99.99 -99.99 -41.80 
1957 10 99.99 -99.99 -36.50 
1957 11 99.99 -99.99 -30.90 
1957 12 99.99 -99.99 -22.30 
1958 01 99.99 -99.99 -23.90 
1958 02 99.99 -99.99 -34.20 
1958 03 99.99 -99.99 -37.40 
1958 04 99.99 -99.99 -40.09 
1958 05 99.99 -99.99 -41.10 
1958 06 99.99 -99.99 -50.90 
1958 07 99.99 -99.99 -45.20 
1958 08 99.99 -99.99 -49.30 
1958 09 99.99 -99.99 -47.90 
1958 10 99.99 -99.99 -42.00 
1958 11 99.99 -99.99 -31.90 
1958 12 99.99 -99.99 -25.60 
