Year,Value,NumPoints 1900,0.431414,420 1901,-0.195511,420 1902,0.603119,420 1903,0.20594,420 1904,-0.308429,416 1905,-0.258808,416 1906,0.30613,414 1907,-0.828825,416 1908,1.16892,416 1909,-0.168045,418 1910,-0.310884,422 1911,-0.0410176,411 1912,-1.19734,413 1913,-0.636674,411 1914,-1.35768,413 1915,0.077902,415 1916,-0.860013,415 1917,-0.235691,415 1918,-0.793603,413 1919,-0.446089,413 1920,-0.158818,413 1921,-0.108923,415 1922,-1.41778,415 1923,0.40218,428 1924,-0.38845,429 1925,-0.347146,429 1926,0.287064,423 1927,0.476413,423 1928,0.30716,425 1929,-0.667181,427 1930,0.721506,427 1931,0.663077,443 1932,0.142598,443 1933,-0.185337,443 1934,-0.159551,443 1935,0.485717,427 1936,0.820862,443 1937,0.194575,443 1938,0.43896,443 1939,0.524495,443 1940,0.49645,443 1941,0.416382,443 1942,-0.0640781,443 1943,-0.103247,443 1944,-0.245775,429 1945,-0.21002,429 1946,-0.379788,443 1947,-0.105318,443 1948,0.556582,443 1949,-0.234124,443 1950,0.0984701,443 1951,-0.0473043,443 1952,-0.215407,443 1953,0.0858412,443 1954,0.133505,443 1955,-0.248968,443 1956,0.245205,445 1957,0.193476,445 1958,0.560341,445 1959,-0.775886,445 1960,0.673689,445 1961,0.524884,445 1962,0.886061,445 1963,-0.255702,445 1964,-0.73239,445 1965,-0.298015,445 1966,0.278335,445 1967,-0.265665,445 1968,-0.194321,445 1969,-0.0887306,445 1970,-0.470811,445 1971,0.327508,445 1972,-0.866834,445 1973,0.050619,445 1974,0.168252,445 1975,0.294298,445 1976,0.0612324,445 1977,0.257268,445 1978,-0.382274,445 1979,0.236651,445 1980,-0.134749,445 1981,0.137658,445 1982,0.231992,445 1983,-0.0387408,445 1984,0.739379,445 1985,0.0738536,445 1986,-0.268428,445 1987,0.148984,445 1988,0.776757,445 1989,1.0009,445 1990,0.982003,445 1991,0.601622,445 1992,-0.136208,445 1993,1.07758,445 1994,0.929416,445 1995,-0.0320444,445 1996,0.681312,445 1997,0.7498,445 1998,1.42054,445 1999,0.0797923,445 2000,0.77757,445 2001,1.08567,445 2002,0.326356,445 2003,1.32213,445 2004,0.632815,445 2005,0.305347,445 2006,0.699765,445 2007,1.69975,445 2008,0.978745,445 2009,1.50653,445 2010,1.21477,445 2011,1.34292,445 2012,1.62466,445 2013,0.492739,445 2014,1.0001,445 2015,0.856791,445 2016,1.7967,445 2017,0.985927,445 2018,0.510384,445 2019,1.61976,445 2020,1.24542,445 2021,0.883497,445 2022,1.38324,445 2023,1.79832,445