Year,Value,NumPoints
1949,-57.9581,1872
1950,-58.0676,1872
1951,-57.5622,1872
1952,-56.9636,1872
1953,-57.2986,1872
1954,-57.5609,1872
1955,-57.7708,1872
1956,-57.0218,1872
1957,-57.6027,1872
1958,-56.9855,1872
1959,-57.6381,1872
1960,-57.3398,1872
1961,-58.3437,1872
1962,-57.7869,1872
1963,-56.9334,1872
1964,-56.4446,1872
1965,-57.2557,1872
1966,-58.2846,1872
1967,-57.7374,1872
1968,-57.8406,1872
1969,-57.8852,1872
1970,-57.734,1872
1971,-58.4118,1872
1972,-57.4233,1872
1973,-58.3605,1872
1974,-58.4465,1872
1975,-58.9209,1872
1976,-59.4452,1872
1977,-58.1314,1872
1978,-58.1804,1872
1979,-57.6625,1872
1980,-58.3841,1872
1981,-58.3755,1872
1982,-58.1504,1872
1983,-57.8266,1872
1984,-58.1402,1872
1985,-59.3782,1872
1986,-58.3897,1872
1987,-58.9809,1872
1988,-58.8076,1872
1989,-58.9827,1872
1990,-58.8516,1872
1991,-58.1081,1872
1992,-57.7163,1872
1993,-58.7785,1872
1994,-59.1349,1872
1995,-59.3667,1872
1996,-59.4369,1872
1997,-60.1446,1872
1998,-59.9482,1872
1999,-60.4282,1872
2000,-60.2462,1872
2001,-59.8479,1872
2002,-59.3279,1872
2003,-59.316,1872
2004,-59.7285,1872
2005,-59.0756,1872
2006,-60.0996,1872
2007,-59.3509,1872
2008,-60.1881,1872
2009,-59.6548,1872
2010,-59.7006,1872
2011,-59.9078,1872
2012,-59.8326,1872
2013,-59.6973,1872
2014,-59.4368,1872
2015,-59.7555,1872
2016,-59.4653,1872
2017,-59.3814,1872
2018,-59.5263,1872
2019,-59.5089,1872
2020,-59.2385,1872
2021,-60.2068,1872