Year,Value,NumPoints
1949,-33.3466,1872
1950,-33.1827,1872
1951,-33.1224,1872
1952,-32.8841,1872
1953,-32.8775,1872
1954,-32.9859,1872
1955,-33.2148,1872
1956,-33.2424,1872
1957,-32.8971,1872
1958,-32.3124,1872
1959,-32.6283,1872
1960,-32.8675,1872
1961,-32.723,1872
1962,-32.828,1872
1963,-32.9468,1872
1964,-33.015,1872
1965,-32.9338,1872
1966,-32.6233,1872
1967,-32.5924,1872
1968,-32.6667,1872
1969,-32.2551,1872
1970,-32.2362,1872
1971,-32.5187,1872
1972,-32.3974,1872
1973,-31.9297,1872
1974,-32.1373,1872
1975,-31.8837,1872
1976,-31.9379,1872
1977,-31.9138,1872
1978,-31.8086,1872
1979,-31.6749,1872
1980,-31.5812,1872
1981,-31.593,1872
1982,-31.7272,1872
1983,-31.6345,1872
1984,-31.8135,1872
1985,-31.7643,1872
1986,-31.829,1872
1987,-31.4893,1872
1988,-31.3545,1872
1989,-31.2418,1872
1990,-31.1083,1872
1991,-31.4087,1872
1992,-31.6771,1872
1993,-31.6621,1872
1994,-31.7621,1872
1995,-31.7384,1872
1996,-31.7097,1872
1997,-31.8109,1872
1998,-31.1654,1872
1999,-31.5182,1872
2000,-31.549,1872
2001,-31.2202,1872
2002,-31.3758,1872
2003,-31.4441,1872
2004,-31.3876,1872
2005,-31.3304,1872
2006,-31.1705,1872
2007,-31.25,1872
2008,-31.4316,1872
2009,-31.2877,1872
2010,-30.7005,1872
2011,-31.0323,1872
2012,-31.2098,1872
2013,-31.2512,1872
2014,-31.0909,1872
2015,-31.0051,1872
2016,-30.8852,1872
2017,-30.8325,1872
2018,-31.1605,1872
2019,-30.9863,1872
2020,-30.835,1872
2021,-30.9991,1872