Year,Value,NumPoints 1900,-0.850149,27 1901,0.0310823,27 1902,-1.11923,28 1903,-0.697237,27 1904,-0.655784,27 1905,-0.181437,27 1906,-0.403378,28 1907,-0.426501,26 1908,-0.362139,27 1909,0.0152106,28 1910,-0.492688,26 1911,-0.0408953,26 1912,-0.952281,30 1913,0.14795,30 1914,-0.0498659,30 1915,0.143661,31 1916,-0.793154,31 1917,-0.137524,31 1918,-0.673855,30 1919,0.375391,29 1920,0.622309,30 1921,-0.664212,30 1922,0.768095,32 1923,0.112846,33 1924,0.73181,34 1925,0.510116,34 1926,-0.911304,35 1927,0.658338,34 1928,-0.111531,35 1929,-0.617199,35 1930,0.179277,34 1931,0.55938,35 1932,0.923842,38 1933,0.0621929,42 1934,0.35473,42 1935,-0.420523,45 1936,0.597771,48 1937,0.52992,49 1938,1.32789,48 1939,-0.591633,50 1940,0.88854,51 1941,-0.0630016,48 1942,0.228833,49 1943,0.779475,48 1944,0.0131958,48 1945,0.798138,49 1946,0.245648,49 1947,0.00213925,53 1948,-0.00722428,53 1949,-0.560176,55 1950,0.222458,56 1951,0.449427,56 1952,-0.296451,56 1953,0.422247,57 1954,0.829961,58 1955,0.319732,58 1956,-0.614896,58 1957,1.1028,58 1958,-0.950923,59 1959,0.750036,60 1960,0.386235,62 1961,0.646279,62 1962,-0.00869612,62 1963,0.128301,61 1964,0.310167,61 1965,0.0190988,61 1966,-0.322699,62 1967,0.808662,62 1968,-1.49201,60 1969,-0.323446,62 1970,0.0278568,62 1971,-0.273696,62 1972,0.0202339,62 1973,-0.327587,62 1974,0.808814,61 1975,0.364931,62 1976,-0.171019,62 1977,-0.336016,62 1978,-0.962172,62 1979,0.404532,62 1980,-0.552745,62 1981,0.452911,62 1982,-0.20048,62 1983,0.259615,62 1984,0.448285,62 1985,0.29292,62 1986,-1.15843,62 1987,-0.48212,62 1988,0.708548,62 1989,0.309429,62 1990,0.616032,62 1991,0.430565,61 1992,-0.21719,61 1993,-0.202888,61 1994,0.248757,59 1995,0.472762,61 1996,-0.689548,56 1997,0.242521,54 1998,0.169339,53 1999,0.110883,53 2000,0.519313,56 2001,1.07151,55 2002,0.109915,54 2003,1.51578,54 2004,0.812168,51 2005,1.39745,52 2006,0.824913,54 2007,1.19252,54 2008,0.428592,53 2009,1.22894,52 2010,0.243288,52 2011,0.857013,53 2012,1.09806,52 2013,1.60744,52 2014,0.403831,49 2015,0.304524,51 2016,2.74688,50 2017,0.651353,46 2018,1.83432,41 2019,0.867283,40 2020,2.06651,40 2021,0.97437,41