Year,Value,NumPoints
1949,-0.913782,51
1950,-0.946316,51
1951,-1.04024,51
1952,-1.38132,51
1953,-1.38748,51
1954,-0.748043,51
1955,-0.835453,51
1956,-0.819479,51
1957,-1.04054,51
1958,-1.62024,51
1959,-1.02654,51
1960,-1.47766,51
1961,-1.07098,51
1962,-0.674789,51
1963,-0.915805,51
1964,-0.78842,51
1965,-0.912462,51
1966,-1.00514,51
1967,-0.439486,51
1968,-1.08633,51
1969,-1.57977,51
1970,-0.995897,51
1971,-0.88612,51
1972,-0.808438,51
1973,-0.938924,51
1974,-1.05884,51
1975,-0.79887,51
1976,-1.3188,51
1977,-1.35651,51
1978,-1.45422,51
1979,-1.51991,51
1980,-1.84684,51
1981,-1.60361,51
1982,-1.37193,51
1983,-1.78351,51
1984,-1.2531,51
1985,-1.14008,51
1986,-1.62986,51
1987,-1.677,51
1988,-1.75992,51
1989,-0.909506,51
1990,-0.834331,51
1991,-1.44641,51
1992,-0.947296,51
1993,-1.20853,51
1994,-1.21877,51
1995,-1.70522,51
1996,-0.882951,51
1997,-1.3306,51
1998,-1.60221,51
1999,-1.10561,51
2000,-1.51446,51
2001,-1.34001,51
2002,-1.19387,51
2003,-1.20615,51
2004,-1.54912,51
2005,-1.54895,51
2006,-0.871279,51
2007,-1.5007,51
2008,-1.04275,51
2009,-1.11435,51
2010,-1.35592,51
2011,-1.06675,51
2012,-0.975821,51
2013,-0.869031,51
2014,-1.46595,51
2015,-1.0856,51
2016,-1.62854,51
2017,-0.727067,51
2018,-1.08807,51
2019,-1.06457,51
2020,-0.838392,51
2021,-0.726159,51