Year,Value,NumPoints 1895,-0.0458567,641 1896,-1.8567,640 1897,-1.11854,640 1898,1.12176,641 1899,-1.94159,641 1900,0.857922,641 1901,-0.580126,641 1902,-0.175375,641 1903,0.374561,641 1904,-0.96371,641 1905,2.47518,641 1906,1.84558,641 1907,-2.47846,641 1908,0.112634,641 1909,-2.1777,641 1910,-1.6233,641 1911,-0.132623,641 1912,2.95402,641 1913,0.559241,641 1914,-0.0866344,641 1915,2.61794,641 1916,-0.145508,641 1917,0.731818,641 1918,-2.03373,641 1919,-0.860887,641 1920,0.269032,641 1921,-0.0590084,641 1922,-1.15089,641 1923,0.318239,641 1924,0.174125,641 1925,-1.45217,641 1926,3.09512,641 1927,-0.874764,641 1928,0.596992,641 1929,0.255012,641 1930,-1.43971,641 1931,1.06454,641 1932,-0.614496,641 1933,-0.769489,641 1934,2.25816,641 1935,0.987209,641 1936,-2.23225,641 1937,-0.312593,641 1938,0.488944,641 1939,-0.384969,641 1940,2.97775,641 1941,2.64598,641 1942,2.12191,641 1943,1.60251,641 1944,1.99952,641 1945,0.51578,641 1946,-0.287246,641 1947,0.746829,641 1948,-1.63448,641 1949,-0.0687047,641 1950,-0.676399,641 1951,-1.48128,641 1952,0.0538837,641 1953,1.81099,641 1954,-1.03414,641 1955,-1.86808,641 1956,-1.16277,641 1957,0.848444,641 1958,1.09804,641 1959,0.0539425,641 1960,0.626784,641 1961,-1.81346,641 1962,0.550828,641 1963,0.908947,641 1964,-1.56051,641 1965,0.333512,641 1966,-1.15721,641 1967,0.033931,641 1968,1.17085,641 1969,1.22351,641 1970,2.37774,641 1971,-1.34127,641 1972,-3.30795,641 1973,0.419476,641 1974,-2.0587,641 1975,-0.0717449,641 1976,-0.323524,641 1977,2.07615,641 1978,2.41209,641 1979,-1.93116,641 1980,3.1127,641 1981,2.77344,641 1982,-0.345267,641 1983,0.943327,641 1984,1.16228,641 1985,-1.21799,641 1986,-0.080663,641 1987,1.48287,641 1988,2.62893,641 1989,2.19794,641 1990,0.699861,641 1991,1.88839,641 1992,1.38011,641 1993,3.70329,641 1994,0.477966,641 1995,1.57396,641 1996,1.5443,641 1997,1.93127,641 1998,4.67813,641 1999,1.02162,641 2000,3.17959,641 2001,2.27568,641 2002,0.364026,641 2003,2.22659,641 2004,1.75364,641 2005,3.07436,641 2006,1.8105,641 2007,-0.160824,641 2008,0.351085,641 2009,-0.0113791,641 2010,4.22488,641 2011,0.782361,641 2012,2.15799,641 2013,0.20858,641 2014,0.986898,641 2015,3.43496,641 2016,4.98192,641 2017,1.35098,641 2018,2.35867,641 2019,4.68499,641 2020,1.01499,641 2021,-0.554897,641