Year,Value,NumPoints
1949,-56.9459,1872
1950,-57.1594,1872
1951,-56.5158,1872
1952,-55.88,1872
1953,-56.3176,1872
1954,-56.6735,1872
1955,-56.8493,1872
1956,-56.1194,1872
1957,-56.6385,1872
1958,-55.7363,1872
1959,-56.7579,1872
1960,-56.2263,1872
1961,-57.2476,1872
1962,-56.5339,1872
1963,-56.1008,1872
1964,-55.1415,1872
1965,-55.857,1872
1966,-57.2494,1872
1967,-56.3303,1872
1968,-56.5443,1872
1969,-56.6471,1872
1970,-56.3529,1872
1971,-56.9866,1872
1972,-55.9209,1872
1973,-57.0501,1872
1974,-57.0698,1872
1975,-57.7053,1872
1976,-57.9487,1872
1977,-56.4803,1872
1978,-56.4273,1872
1979,-56.1837,1872
1980,-57.0182,1872
1981,-56.7286,1872
1982,-56.7781,1872
1983,-56.2588,1872
1984,-56.614,1872
1985,-57.7358,1872
1986,-56.5952,1872
1987,-57.6999,1872
1988,-57.2447,1872
1989,-57.5057,1872
1990,-57.3852,1872
1991,-56.3927,1872
1992,-56.2385,1872
1993,-57.2628,1872
1994,-57.6994,1872
1995,-57.9318,1872
1996,-57.9981,1872
1997,-58.5838,1872
1998,-58.4282,1872
1999,-58.6047,1872
2000,-58.3622,1872
2001,-58.454,1872
2002,-57.4664,1872
2003,-57.7893,1872
2004,-58.0867,1872
2005,-57.3929,1872
2006,-58.5865,1872
2007,-57.5802,1872
2008,-58.6963,1872
2009,-57.9903,1872
2010,-58.3846,1872
2011,-58.1438,1872
2012,-58.2197,1872
2013,-58.273,1872
2014,-57.7328,1872
2015,-58.4463,1872
2016,-58.0393,1872
2017,-57.7574,1872
2018,-58.1497,1872
2019,-57.8767,1872
2020,-58.0096,1872
2021,-58.5972,1872