Year,Value,NumPoints 1900,0.0924125,2 1901,0.0647495,2 1902,0.0568517,2 1903,-0.624913,2 1904,-0.882092,2 1905,-0.320504,2 1906,-1.08597,2 1907,-1.19374,2 1908,-0.18925,2 1909,-0.00377076,2 1910,-0.937438,2 1911,-0.647601,2 1912,0.188576,2 1913,-0.787863,2 1914,-1.609,2 1915,0.285833,2 1916,0.834377,2 1917,0.498023,2 1918,-1.20488,2 1919,-0.631049,2 1920,-1.3014,2 1921,-1.32505,2 1922,-1.11382,2 1923,0.319484,2 1924,0.396029,2 1925,-0.486773,2 1926,0.312106,2 1927,0.523981,2 1928,1.16005,2 1929,1.02436,2 1930,0.0815533,2 1931,0.0465985,2 1932,0.80162,2 1933,0.230966,2 1934,0.124183,2 1935,0.361684,2 1936,0.772698,2 1937,-0.00465088,2 1938,-1.22956,2 1939,0.471337,2 1940,0.374544,2 1941,1.38048,2 1942,0.972415,2 1943,0.163171,2 1944,-0.232503,2 1945,0.158188,2 1946,0.633065,2 1947,1.56201,2 1948,0.162796,2 1949,-1.35022,2 1950,0.20322,2 1951,0.0665985,2 1952,0.507369,2 1953,-0.0754578,2 1954,0.0515898,2 1955,0.447964,2 1956,-0.245233,2 1957,0.112033,2 1958,0.574877,2 1959,-0.00988412,2 1960,0.901483,2 1961,0.321241,2 1962,0.873477,2 1963,0.543123,2 1964,0.1108,2 1965,0.814119,2 1966,0.472056,2 1967,-0.756839,2 1968,-0.097794,2 1969,-0.0675137,2 1970,-0.381948,2 1971,-1.89687,2 1972,-2.19229,2 1973,-0.57,2 1974,0.0847311,2 1975,-0.465296,2 1976,-0.920004,2 1977,1.00966,2 1978,-0.195332,2 1979,0.315434,2 1980,0.667915,2 1981,-0.552625,2 1982,-1.90727,2 1983,-3.06365,2 1984,-3.23624,2 1985,1.01871,2 1986,-0.120567,2 1987,-0.289139,2 1988,0.355608,2 1989,-2.30472,2 1990,-1.05918,2 1991,-0.37784,2 1992,-2.25434,2 1993,-2.80495,2 1994,-1.26518,2 1995,-0.97265,2 1996,0.71355,2 1997,0.242196,2 1998,0.397623,2 1999,-0.0227141,2 2000,0.176191,2 2001,0.813089,2 2002,0.233839,2 2003,1.81054,2 2004,1.12289,2 2005,1.52805,2 2006,1.00548,2 2007,0.891425,2 2008,-0.445578,2 2009,0.48329,2 2010,3.53341,2 2011,0.211671,2 2012,0.964342,2 2013,0.957213,2 2014,0.978668,2 2015,-0.985453,2 2016,1.40735,2 2017,0.822406,2 2018,-0.357946,2 2019,1.92787,2 2020,0.962946,2 2021,1.50417,2