Year,Value,NumPoints
1949,-56.5303,1872
1950,-56.4443,1872
1951,-58.8418,1872
1952,-52.9478,1872
1953,-58.7655,1872
1954,-53.4471,1872
1955,-59.8671,1872
1956,-58.798,1872
1957,-55.8212,1872
1958,-53.9583,1872
1959,-50.6526,1872
1960,-59.0244,1872
1961,-50.7413,1872
1962,-58.6553,1872
1963,-56.4318,1872
1964,-48.1065,1872
1965,-57.0344,1872
1966,-55.4001,1872
1967,-61.8143,1872
1968,-61.3767,1872
1969,-54.9817,1872
1970,-58.7605,1872
1971,-55.4363,1872
1972,-54.4477,1872
1973,-54.9371,1872
1974,-53.3217,1872
1975,-52.5244,1872
1976,-60.4273,1872
1977,-55.3648,1872
1978,-55.2008,1872
1979,-52.5794,1872
1980,-51.7816,1872
1981,-54.936,1872
1982,-58.2813,1872
1983,-53.0268,1872
1984,-49.9189,1872
1985,-54.8895,1872
1986,-54.5785,1872
1987,-55.9813,1872
1988,-53.4862,1872
1989,-48.8904,1872
1990,-59.4834,1872
1991,-56.3854,1872
1992,-56.1144,1872
1993,-55.1434,1872
1994,-58.8976,1872
1995,-60.1413,1872
1996,-56.4974,1872
1997,-66.9136,1872
1998,-57.8369,1872
1999,-52.2911,1872
2000,-58.207,1872
2001,-55.8933,1872
2002,-57.4596,1872
2003,-56.7085,1872
2004,-59.0458,1872
2005,-53.5434,1872
2006,-59.8609,1872
2007,-57.3145,1872
2008,-53.9607,1872
2009,-57.8329,1872
2010,-54.6455,1872
2011,-64.6149,1872
2012,-57.1115,1872
2013,-61.1255,1872
2014,-56.0609,1872
2015,-60.5286,1872
2016,-49.6401,1872
2017,-56.5597,1872
2018,-53.959,1872
2019,-62.3419,1872
2020,-64.1031,1872