Year,Value,NumPoints 1900,-1.3291,4 1901,0.661528,4 1902,-2.1871,5 1903,-1.03122,3 1904,-0.182821,4 1905,1.37821,5 1906,-1.04887,6 1907,-0.0723638,5 1908,0.212142,5 1909,-1.80701,4 1910,-1.1749,6 1911,0.748362,6 1912,0.810104,5 1913,0.283979,5 1914,2.79321,5 1915,-0.9367,5 1916,-0.370325,5 1917,-5.59863,6 1918,-0.941944,8 1919,-0.380163,9 1920,-0.33444,8 1921,1.10663,8 1922,1.01315,9 1923,1.36283,9 1924,0.367906,10 1925,2.48253,9 1926,1.9465,9 1927,-2.16918,10 1928,2.27218,10 1929,1.67345,11 1930,0.654879,10 1931,1.09859,11 1932,-0.700931,10 1933,-2.6505,10 1934,1.76901,8 1935,-0.177964,9 1936,1.00589,9 1937,2.00771,10 1938,3.14965,10 1939,-0.748748,9 1940,1.9703,10 1941,0.048975,10 1942,-2.68268,10 1943,3.17159,10 1944,1.87236,11 1945,-1.14733,11 1946,-1.6943,11 1947,2.44004,11 1948,-2.35935,11 1949,1.24957,11 1950,-0.295208,11 1951,0.521983,11 1952,3.15026,11 1953,0.801158,11 1954,0.0933339,11 1955,-2.88824,11 1956,-4.92627,11 1957,1.31347,11 1958,-0.618943,12 1959,-0.231606,11 1960,2.02662,12 1961,-3.37793,11 1962,1.05512,12 1963,-0.290302,11 1964,-1.8309,11 1965,-1.53045,11 1966,-1.20331,11 1967,1.09782,11 1968,-1.39327,11 1969,2.69958,11 1970,-0.655004,11 1971,-0.621399,11 1972,0.872895,12 1973,-0.714959,12 1974,-1.68767,12 1975,-2.61185,12 1976,1.92063,12 1977,-2.14629,12 1978,2.17569,12 1979,2.08209,12 1980,-0.644179,12 1981,1.18027,12 1982,0.276655,12 1983,1.50991,12 1984,0.234406,12 1985,1.16251,12 1986,2.36739,12 1987,1.20325,12 1988,-0.361183,12 1989,0.326423,12 1990,-1.53687,12 1991,0.639394,12 1992,-0.332686,12 1993,3.19484,11 1994,-1.24,11 1995,0.134726,12 1996,-2.0806,11 1997,0.210311,11 1998,0.962224,12 1999,-2.10778,12 2000,3.32446,12 2001,-1.27312,12 2002,5.61295,12 2003,1.86702,11 2004,2.63706,12 2005,0.845947,12 2006,0.588883,12 2007,2.31149,12 2008,-1.07359,12 2009,1.48849,11 2010,0.60763,11 2011,0.354465,11 2012,-1.58911,11 2013,2.79237,10 2014,4.11432,11 2015,3.25929,11 2016,1.56377,10 2017,4.50717,10 2018,4.42477,8 2019,3.61129,8 2020,2.7959,8