Year,Value,NumPoints 1881,-0.200068,65 1882,-1.49891,95 1883,0.670123,111 1884,-1.28858,96 1885,-0.740931,100 1886,-2.23105,108 1887,-2.97877,74 1888,-0.998857,76 1889,-0.774237,78 1890,-1.76973,79 1891,-2.14489,61 1892,-1.73018,85 1893,-0.709128,167 1894,-3.07425,177 1895,-0.552307,175 1896,-1.77901,205 1897,-2.16371,213 1898,-1.1277,222 1899,-1.85944,225 1900,-0.93493,238 1901,-1.48547,229 1902,-0.293683,276 1903,-0.942077,277 1904,-0.596574,224 1905,0.62189,182 1906,-0.818796,174 1907,-1.89594,196 1908,-0.607434,226 1909,-1.88604,222 1910,-0.989739,244 1911,-0.202119,251 1912,0.967117,230 1913,-1.18584,220 1914,-1.09491,228 1915,0.130594,243 1916,0.213059,278 1917,-1.11992,244 1918,-1.91814,235 1919,-1.13826,233 1920,-0.842062,235 1921,-0.533692,286 1922,-1.09169,302 1923,0.261029,287 1924,-0.642192,284 1925,-0.665446,312 1926,1.21484,302 1927,-0.405865,295 1928,0.912105,300 1929,0.519393,310 1930,0.748575,375 1931,0.271472,678 1932,0.0618645,681 1933,-0.424886,685 1934,0.101084,585 1935,-0.0994323,321 1936,-0.27619,585 1937,1.12098,685 1938,1.41793,685 1939,0.088432,685 1940,1.81723,685 1941,0.0117812,685 1942,1.28639,685 1943,1.51792,590 1944,0.937009,338 1945,0.184825,369 1946,-0.0019307,685 1947,1.03888,685 1948,-0.129218,685 1949,0.000710693,685 1950,0.365118,685 1951,0.172912,685 1952,0.454545,685 1953,0.869636,685 1954,0.727507,685 1955,-0.320433,685 1956,-0.563125,685 1957,0.636028,685 1958,0.538633,685 1959,-0.083492,685 1960,0.288397,685 1961,-0.709884,685 1962,0.763223,685 1963,-0.105104,685 1964,-1.26897,685 1965,-0.0501473,685 1966,-0.750347,685 1967,-0.0889985,685 1968,-0.0443625,685 1969,0.260622,685 1970,-0.12829,685 1971,-0.0247205,685 1972,-0.738742,685 1973,0.213321,685 1974,-0.760086,685 1975,-0.462334,685 1976,0.0144467,685 1977,0.522563,685 1978,0.146094,685 1979,0.0128278,685 1980,0.478727,685 1981,1.63353,685 1982,-0.462612,685 1983,-0.141626,685 1984,0.188532,685 1985,0.110904,685 1986,-0.400195,685 1987,-0.178978,685 1988,0.823231,685 1989,0.547628,685 1990,0.569172,685 1991,0.696805,685 1992,-0.0840467,685 1993,1.27462,685 1994,0.598636,685 1995,1.50354,685 1996,0.976538,685 1997,0.924162,685 1998,2.57082,685 1999,0.706565,685 2000,0.772854,685 2001,1.11545,685 2002,1.43365,685 2003,1.55273,685 2004,0.199699,685 2005,1.63237,685 2006,2.47801,685 2007,2.05941,685 2008,1.36443,685 2009,1.56294,685 2010,3.12718,685 2011,2.41443,685 2012,2.37619,685 2013,1.45668,685 2014,2.2082,685 2015,2.43037,685 2016,3.72329,685 2017,2.48883,685 2018,2.34153,685 2019,3.33852,685