Year,Value,NumPoints
1950,-0.611164,745
1951,-0.587427,800
1952,0.259748,812
1953,0.142252,820
1954,-0.518207,834
1955,0.389178,843
1956,-0.35255,862
1957,-0.271195,868
1958,0.469383,877
1959,0.112353,888
1960,0.0286643,888
1961,0.0820414,910
1962,0.179624,917
1963,-0.0753099,919
1964,-0.0397189,918
1965,-0.067793,922
1966,-0.212097,922
1967,-0.303463,926
1968,-0.35834,923
1969,-0.619341,933
1970,-0.0361158,929
1971,-0.0846183,922
1972,-0.77976,924
1973,0.163572,921
1974,-0.451334,916
1975,0.141243,919
1976,-0.0769257,909
1977,-0.41847,910
1978,0.0432048,913
1979,-0.106067,915
1980,0.0976689,909
1981,0.734802,903
1982,-0.209768,884
1983,0.709477,885
1984,0.1351,889
1985,-0.000452414,902
1986,0.428803,893
1987,0.178394,892
1988,0.65744,887
1989,0.124542,880
1990,0.378044,882
1991,0.526582,867
1992,0.69362,862
1993,0.444648,852
1994,0.352782,854
1995,0.836516,861
1996,0.214135,848
1997,0.41585,840
1998,0.725,841
1999,0.764508,846
2000,0.313618,837
2001,0.657346,817
2002,1.17248,814
2003,1.01217,827
2004,0.757204,830
2005,0.936257,818
2006,0.591667,805
2007,1.6705,814
2008,0.333811,820
2009,0.797462,807
2010,0.807916,809
2011,0.458252,787
2012,0.558022,795
2013,0.931564,793
2014,0.961657,772
2015,1.25046,777
2016,1.44635,774
2017,1.37803,747
2018,1.01689,740
2019,1.26303,698
2020,1.91113,704
2021,1.02152,684