Year,Value,NumPoints 1950,-4.90775,1687 1951,-0.543934,1687 1952,-1.72791,1687 1953,-0.433172,1687 1954,-3.70717,1687 1955,2.50132,1687 1956,1.61116,1687 1957,-2.24561,1687 1958,5.01075,1687 1959,0.188413,1687 1960,1.38994,1687 1961,0.568383,1687 1962,-0.222877,1687 1963,-0.177596,1687 1964,1.54207,1687 1965,-0.529117,1687 1966,-2.88277,1687 1967,0.45963,1687 1968,-0.728254,1687 1969,-1.02527,1687 1970,-0.00915168,1687 1971,-1.21332,1687 1972,-3.09045,1687 1973,1.79355,1687 1974,-2.42853,1687 1975,-1.13469,1687 1976,0.760557,1687 1977,3.30676,1687 1978,0.569396,1687 1979,1.31931,1687 1980,1.07858,1687 1981,6.56951,1687 1982,-3.6204,1687 1983,1.43734,1687 1984,-0.0547646,1687 1985,3.6337,1687 1986,2.68563,1687 1987,4.45386,1687 1988,0.571739,1687 1989,0.295404,1687 1990,1.63745,1687 1991,-1.1271,1687 1992,3.02157,1687 1993,1.70121,1687 1994,-2.45263,1687 1995,3.59594,1687 1996,-1.9951,1687 1997,0.518778,1687 1998,0.0420308,1687 1999,1.34225,1687 2000,1.46923,1687 2001,4.99796,1687 2002,2.5659,1687 2003,3.31658,1687 2004,-0.970256,1687 2005,0.337563,1687 2006,5.20975,1687 2007,4.3716,1687 2008,2.43434,1687 2009,1.65553,1687 2010,4.64392,1687 2011,3.21909,1687 2012,3.04269,1687 2013,1.99222,1687 2014,2.93187,1687 2015,2.10826,1687 2016,5.85246,1687 2017,5.6431,1687 2018,2.91088,1687 2019,1.70143,1687 2020,2.93914,1687 2021,7.17634,1687 2022,1.03991,1687 2023,5.55917,1687