Year,Value,NumPoints 1900,-0.645622,55 1901,-0.0224542,53 1902,-0.80998,55 1903,-0.529707,55 1904,-0.644209,51 1905,-0.449201,53 1906,-0.263394,54 1907,-0.730126,52 1908,-0.137081,52 1909,-0.0474669,55 1910,-0.107012,55 1911,-0.15181,53 1912,-0.751335,59 1913,-0.105051,59 1914,-0.166824,57 1915,-0.0869061,60 1916,-0.383148,60 1917,-0.056249,59 1918,-0.562683,61 1919,0.12211,60 1920,0.0589398,61 1921,-0.526222,63 1922,-0.205598,65 1923,0.0274074,67 1924,0.112116,69 1925,0.326896,70 1926,-0.159956,72 1927,0.431273,75 1928,-0.224947,74 1929,-0.452338,81 1930,0.194215,79 1931,0.471286,82 1932,0.539918,84 1933,0.109765,98 1934,0.119302,94 1935,0.0362293,103 1936,0.582542,114 1937,0.286653,117 1938,0.883565,116 1939,-0.117987,121 1940,0.287681,124 1941,0.380206,122 1942,0.101974,127 1943,0.213522,130 1944,0.192358,132 1945,0.38659,134 1946,-0.18135,137 1947,-0.122255,141 1948,-0.0806273,146 1949,-0.169015,151 1950,-0.236006,156 1951,0.429726,158 1952,0.0856287,161 1953,0.498092,160 1954,0.46743,163 1955,-0.0202061,163 1956,-0.431868,165 1957,0.401175,169 1958,-0.0122557,173 1959,0.19683,178 1960,0.310172,180 1961,0.102546,182 1962,-0.0165452,182 1963,-0.214619,180 1964,-0.135071,180 1965,-0.337201,180 1966,0.0507708,180 1967,0.100321,180 1968,-0.387455,178 1969,-0.0394148,181 1970,-0.1641,179 1971,0.291461,181 1972,-0.348732,179 1973,0.218131,179 1974,0.439614,178 1975,0.0924394,180 1976,0.0338235,182 1977,0.147989,181 1978,-0.44841,182 1979,-0.209909,180 1980,0.00186025,179 1981,0.101556,174 1982,-0.099948,178 1983,0.162013,177 1984,0.0658981,177 1985,-0.0245297,179 1986,-0.583452,177 1987,-0.0512569,178 1988,0.588399,177 1989,0.363945,177 1990,0.4281,177 1991,0.959261,173 1992,-0.565471,173 1993,0.0613699,169 1994,0.352215,163 1995,0.68794,174 1996,-0.201807,165 1997,0.635799,165 1998,0.675065,163 1999,0.335756,161 2000,0.369952,166 2001,0.941014,165 2002,0.625586,163 2003,1.41414,162 2004,0.652445,156 2005,1.01496,162 2006,1.10934,163 2007,1.30939,162 2008,0.681705,160 2009,1.10892,154 2010,1.16599,154 2011,1.11397,155 2012,1.20881,155 2013,0.916431,152 2014,1.01174,148 2015,0.727061,151 2016,1.9389,140 2017,1.03616,133 2018,1.04831,124 2019,1.24661,119 2020,1.50286,112 2021,1.05875,119