Year,Value,NumPoints
1949,-13.2725,1872
1950,-13.1599,1872
1951,-13.0131,1872
1952,-12.8542,1872
1953,-12.8956,1872
1954,-13.0479,1872
1955,-13.1371,1872
1956,-13.1292,1872
1957,-12.9423,1872
1958,-12.4805,1872
1959,-12.6379,1872
1960,-12.8136,1872
1961,-12.6656,1872
1962,-12.7232,1872
1963,-12.8826,1872
1964,-13.0505,1872
1965,-12.949,1872
1966,-12.6163,1872
1967,-12.6902,1872
1968,-12.6281,1872
1969,-12.3108,1872
1970,-12.2979,1872
1971,-12.5244,1872
1972,-12.4593,1872
1973,-12.0404,1872
1974,-12.1227,1872
1975,-11.7374,1872
1976,-11.7764,1872
1977,-11.7105,1872
1978,-11.6284,1872
1979,-11.6954,1872
1980,-11.6646,1872
1981,-11.6165,1872
1982,-11.7948,1872
1983,-11.763,1872
1984,-11.9002,1872
1985,-11.8024,1872
1986,-11.9169,1872
1987,-11.655,1872
1988,-11.5889,1872
1989,-11.3771,1872
1990,-11.4376,1872
1991,-11.6535,1872
1992,-11.8767,1872
1993,-11.8546,1872
1994,-11.956,1872
1995,-11.929,1872
1996,-11.7907,1872
1997,-11.8764,1872
1998,-11.4366,1872
1999,-11.6827,1872
2000,-11.7714,1872
2001,-11.391,1872
2002,-11.4951,1872
2003,-11.5631,1872
2004,-11.4791,1872
2005,-11.425,1872
2006,-11.2651,1872
2007,-11.3798,1872
2008,-11.3768,1872
2009,-11.2836,1872
2010,-10.8494,1872
2011,-11.0744,1872
2012,-11.2671,1872
2013,-11.2163,1872
2014,-11.0396,1872
2015,-11.1674,1872
2016,-10.9425,1872
2017,-10.9453,1872
2018,-11.3009,1872
2019,-11.1363,1872
2020,-11.0447,1872
2021,-11.131,1872