Year,Value,NumPoints
1949,-55.4979,1872
1950,-56.0254,1872
1951,-54.1069,1872
1952,-54.3756,1872
1953,-54.813,1872
1954,-55.3272,1872
1955,-55.5214,1872
1956,-55.0187,1872
1957,-55.1486,1872
1958,-52.672,1872
1959,-56.2686,1872
1960,-53.9874,1872
1961,-55.9348,1872
1962,-54.3162,1872
1963,-54.4915,1872
1964,-52.7925,1872
1965,-53.7887,1872
1966,-57.3359,1872
1967,-53.9375,1872
1968,-55.3455,1872
1969,-54.9469,1872
1970,-54.2942,1872
1971,-55.7097,1872
1972,-54.031,1872
1973,-55.6623,1872
1974,-55.2286,1872
1975,-56.6498,1872
1976,-55.3629,1872
1977,-56.6533,1872
1978,-55.8208,1872
1979,-54.9687,1872
1980,-56.7648,1872
1981,-55.425,1872
1982,-55.8593,1872
1983,-54.8775,1872
1984,-55.1713,1872
1985,-55.7223,1872
1986,-54.626,1872
1987,-57.1096,1872
1988,-55.592,1872
1989,-57.2133,1872
1990,-56.663,1872
1991,-54.5901,1872
1992,-54.5527,1872
1993,-56.057,1872
1994,-56.707,1872
1995,-57.0275,1872
1996,-55.8352,1872
1997,-57.5234,1872
1998,-57.0516,1872
1999,-56.5794,1872
2000,-57.0375,1872
2001,-58.253,1872
2002,-55.4385,1872
2003,-57.6559,1872
2004,-57.1928,1872
2005,-56.1139,1872
2006,-58.409,1872
2007,-56.1519,1872
2008,-58.7776,1872
2009,-57.5354,1872
2010,-58.6302,1872
2011,-56.6105,1872
2012,-57.496,1872
2013,-58.2955,1872
2014,-56.5066,1872
2015,-58.7077,1872
2016,-58.0869,1872
2017,-56.1345,1872
2018,-58.2943,1872
2019,-56.1283,1872
2020,-58.4289,1872
2021,-57.9375,1872
2022,-60.5773,1872