Year,Value,NumPoints 1900,-0.0637958,12797 1901,0.00235911,12778 1902,-0.25763,12801 1903,-0.405738,12925 1904,-0.494372,12950 1905,-0.305781,13000 1906,-0.038754,12928 1907,-0.366038,13044 1908,-0.427189,13103 1909,-0.576913,13065 1910,-0.419373,13147 1911,-0.518479,13109 1912,-0.155249,13130 1913,-0.379052,13145 1914,-0.293216,13151 1915,0.0814509,13159 1916,-0.294519,13175 1917,-0.548516,13184 1918,-0.441949,13156 1919,-0.134638,13138 1920,-0.224349,13152 1921,-0.280159,13171 1922,-0.211049,13183 1923,-0.393845,13165 1924,-0.286664,13187 1925,-0.232431,13197 1926,-0.0982714,13237 1927,-0.285506,13296 1928,-0.261476,13315 1929,-0.398987,13335 1930,-0.221043,13317 1931,-0.203714,14048 1932,-0.0274103,14090 1933,-0.214807,14099 1934,-0.278824,14098 1935,-0.341671,13347 1936,-0.159746,14099 1937,-0.124004,14099 1938,0.0946098,14094 1939,-0.074755,14104 1940,0.211522,14101 1941,0.18891,14106 1942,0.110498,14102 1943,0.127112,14102 1944,0.208242,13454 1945,0.214839,13453 1946,0.0838855,14224 1947,0.0837114,14226 1948,-0.0859286,14226 1949,-0.100419,14176 1950,-0.192769,14330 1951,-0.108018,14381 1952,0.0637725,14178 1953,0.234945,14142 1954,-0.117145,14352 1955,-0.216031,14606 1956,-0.272138,15074 1957,0.00569512,16147 1958,0.0163249,16127 1959,0.15157,16155 1960,-0.163161,16155 1961,0.127463,16155 1962,0.0473589,16067 1963,-0.0786743,16147 1964,-0.328316,16147 1965,-0.189473,16143 1966,-0.13485,16155 1967,-0.0632149,16155 1968,-0.0603835,16155 1969,0.157066,16155 1970,0.0433755,16051 1971,-0.0771716,16055 1972,-0.00718974,16063 1973,0.2669,16031 1974,-0.124187,16031 1975,0.0310803,16063 1976,-0.0876147,16067 1977,0.256042,16067 1978,0.163851,16067 1979,0.155056,16067 1980,0.300161,16067 1981,0.318504,16067 1982,0.129184,16059 1983,0.28061,16067 1984,0.0535228,16067 1985,0.102901,16067 1986,0.224846,16100 1987,0.238809,16100 1988,0.422389,16100 1989,0.294229,16100 1990,0.565159,16100 1991,0.510271,16100 1992,0.26308,16142 1993,0.27077,16133 1994,0.404081,16142 1995,0.462109,16142 1996,0.329908,16133 1997,0.334676,16142 1998,0.63401,16142 1999,0.31587,16142 2000,0.563713,16142 2001,0.500304,16133 2002,0.583649,16133 2003,0.551984,16133 2004,0.609287,16133 2005,0.66982,16133 2006,0.469197,16133 2007,0.760616,16142 2008,0.532579,16142 2009,0.60001,16142 2010,0.842026,16142 2011,0.6388,16142 2012,0.71531,16142 2013,0.534044,16142 2014,0.784442,16142 2015,0.75033,16142 2016,1.10463,16142 2017,0.936021,16142 2018,0.888671,16142 2019,1.0193,16142 2020,1.12922,16142 2021,0.759308,16142 2022,0.834129,16142 2023,1.0038,16142