Year,Value,NumPoints 1900,-1.00058,54 1901,-0.0191269,52 1902,-1.87431,54 1903,-0.787607,56 1904,-0.177427,54 1905,-0.222473,54 1906,0.438721,55 1907,-0.528542,55 1908,-0.469777,52 1909,-1.12084,55 1910,-0.574536,55 1911,-0.601658,53 1912,-0.204517,59 1913,-0.452804,59 1914,-0.637772,58 1915,0.189163,59 1916,-0.768741,60 1917,-0.92419,60 1918,-1.12647,59 1919,-0.557609,58 1920,0.121025,61 1921,0.673392,63 1922,-0.277916,66 1923,-1.09382,67 1924,-1.0498,70 1925,-0.222799,69 1926,-0.120867,72 1927,-0.597887,74 1928,-0.561822,75 1929,-0.942319,80 1930,-0.135822,81 1931,-0.327996,84 1932,0.200189,85 1933,-0.451779,95 1934,-0.0135339,96 1935,-0.314039,102 1936,0.842006,113 1937,0.57383,118 1938,0.796808,117 1939,0.402027,121 1940,0.928223,127 1941,-0.251273,125 1942,0.0600344,125 1943,1.6824,131 1944,0.123242,129 1945,0.653181,133 1946,-0.106991,136 1947,0.49801,140 1948,0.808476,145 1949,-0.238061,151 1950,-0.0787751,155 1951,0.181494,157 1952,-0.135737,159 1953,1.67146,160 1954,0.86732,162 1955,-0.0454323,164 1956,-0.485372,165 1957,0.433763,167 1958,-0.745662,172 1959,0.0303251,178 1960,0.506505,179 1961,-0.0674939,182 1962,0.231645,182 1963,-0.188661,181 1964,-1.06938,179 1965,-0.395587,180 1966,-0.620552,180 1967,0.522934,179 1968,-0.179576,179 1969,-0.580463,181 1970,-0.567451,180 1971,-0.233098,181 1972,-0.432982,180 1973,0.528378,179 1974,0.0157826,178 1975,0.649169,181 1976,0.441719,183 1977,0.932496,182 1978,-0.758641,182 1979,-0.590934,181 1980,0.255765,180 1981,0.568232,175 1982,-0.16352,178 1983,-0.303893,178 1984,0.241278,177 1985,-0.350274,179 1986,-0.0199013,178 1987,-0.632897,179 1988,0.37168,177 1989,0.632961,177 1990,1.86438,177 1991,1.29918,175 1992,-0.316403,172 1993,0.806031,170 1994,0.637,163 1995,1.72866,174 1996,0.317183,168 1997,1.37589,164 1998,0.662481,163 1999,0.391976,162 2000,1.27734,167 2001,0.912301,166 2002,1.12957,165 2003,1.31402,162 2004,0.740097,163 2005,1.67281,164 2006,0.99959,161 2007,1.90167,162 2008,1.11385,159 2009,1.0866,155 2010,2.01024,153 2011,1.95723,155 2012,2.09965,154 2013,1.74481,153 2014,1.80425,149 2015,2.01933,150 2016,2.94376,143 2017,1.42774,131 2018,1.54021,127 2019,2.52875,119 2020,2.74396,117 2021,2.27208,114