Year,Value,NumPoints
1949,-53.649,1872
1950,-53.0378,1872
1951,-53.2621,1872
1952,-52.9351,1872
1953,-52.8637,1872
1954,-53.0613,1872
1955,-53.1837,1872
1956,-53.0018,1872
1957,-52.8281,1872
1958,-52.3303,1872
1959,-52.5158,1872
1960,-52.6394,1872
1961,-52.5955,1872
1962,-52.8481,1872
1963,-52.5929,1872
1964,-52.4138,1872
1965,-52.8226,1872
1966,-52.5924,1872
1967,-52.0887,1872
1968,-52.488,1872
1969,-52.2139,1872
1970,-52.0361,1872
1971,-51.9876,1872
1972,-52.0414,1872
1973,-51.9001,1872
1974,-52.184,1872
1975,-51.4707,1872
1976,-51.9354,1872
1977,-51.7786,1872
1978,-51.7116,1872
1979,-50.2383,1872
1980,-50.1365,1872
1981,-50.4177,1872
1982,-49.8977,1872
1983,-50.0973,1872
1984,-50.1178,1872
1985,-50.5335,1872
1986,-50.3958,1872
1987,-50.4821,1872
1988,-49.7907,1872
1989,-49.8403,1872
1990,-49.3723,1872
1991,-49.7917,1872
1992,-49.9382,1872
1993,-50.3227,1872
1994,-50.3102,1872
1995,-50.4673,1872
1996,-50.1225,1872
1997,-50.3883,1872
1998,-50.0518,1872
1999,-50.7055,1872
2000,-50.5443,1872
2001,-50.297,1872
2002,-50.0513,1872
2003,-50.3215,1872
2004,-50.2504,1872
2005,-50.2683,1872
2006,-50.4107,1872
2007,-50.218,1872
2008,-50.5541,1872
2009,-50.4139,1872
2010,-49.8402,1872
2011,-50.2494,1872
2012,-50.2089,1872
2013,-50.147,1872
2014,-50.1592,1872
2015,-50.2002,1872
2016,-49.9779,1872
2017,-49.909,1872
2018,-50.5247,1872
2019,-50.0394,1872
2020,-49.4968,1872
2021,-50.1977,1872