Year,Value,NumPoints 1900,-0.528114,1775 1901,-0.669911,1729 1902,-0.559264,1757 1903,-0.677405,1693 1904,-0.190911,1716 1905,-0.481313,1680 1906,0.393239,1730 1907,-0.252233,1764 1908,-0.446855,1777 1909,-0.166343,1775 1910,0.136561,1774 1911,-0.205555,1727 1912,-1.23677,1833 1913,-0.647707,1809 1914,0.0210467,1837 1915,-0.351607,1837 1916,-0.34241,1841 1917,-0.40958,1824 1918,-0.609238,1806 1919,0.222438,1806 1920,-0.160125,1806 1921,-0.617768,1804 1922,-0.621624,1812 1923,0.263898,1834 1924,0.0187118,1852 1925,-0.472825,1844 1926,0.209398,1858 1927,0.211614,1929 1928,0.123165,1929 1929,-0.440159,1929 1930,0.252113,1949 1931,0.234948,2700 1932,0.57452,2700 1933,0.0469241,2700 1934,-0.144227,2700 1935,-0.0730878,1935 1936,0.342235,2700 1937,-0.123174,2700 1938,0.227211,2700 1939,0.132932,2700 1940,0.233174,2700 1941,0.413972,2700 1942,-0.216286,2700 1943,0.114788,2700 1944,-0.0184634,1976 1945,0.442791,1980 1946,-0.294639,2700 1947,-0.364684,2700 1948,-0.147951,2700 1949,-0.0903204,2700 1950,-0.0863276,2700 1951,0.1409,2700 1952,-0.201004,2700 1953,0.411997,2700 1954,0.682071,2700 1955,-0.0128865,2700 1956,-0.612094,2700 1957,0.549345,2700 1958,0.280562,2700 1959,0.083565,2700 1960,0.1447,2700 1961,-0.249814,2700 1962,-0.073397,2700 1963,-0.0199711,2700 1964,-0.067377,2700 1965,-0.327305,2700 1966,0.178167,2700 1967,-0.234573,2700 1968,-0.0613733,2700 1969,0.0654103,2700 1970,-0.622225,2700 1971,0.132389,2700 1972,-0.253167,2700 1973,0.124713,2700 1974,0.360627,2700 1975,-0.0178456,2700 1976,-0.147592,2700 1977,0.127103,2700 1978,-0.297077,2700 1979,-0.303261,2700 1980,0.218047,2700 1981,0.375429,2700 1982,-0.432594,2700 1983,-0.0190045,2700 1984,-0.294859,2700 1985,-0.161361,2700 1986,-0.512662,2700 1987,-0.0458113,2700 1988,0.151625,2700 1989,0.30072,2700 1990,0.43249,2700 1991,0.764289,2700 1992,-0.57496,2700 1993,-0.190213,2700 1994,0.208882,2700 1995,0.693885,2700 1996,-0.509341,2700 1997,0.291604,2700 1998,0.630724,2700 1999,-0.0503453,2700 2000,0.11844,2700 2001,0.704418,2700 2002,0.83668,2700 2003,1.18957,2700 2004,0.691632,2700 2005,0.699026,2700 2006,0.633557,2700 2007,1.3399,2700 2008,0.739903,2700 2009,0.897737,2700 2010,1.14158,2700 2011,0.971799,2700 2012,0.877086,2700 2013,0.73472,2700 2014,1.22141,2700 2015,0.57022,2700 2016,1.53445,2700 2017,1.16301,2700 2018,0.897173,2700 2019,1.3877,2700 2020,1.32842,2700 2021,1.14871,2700 2022,1.36394,2700 2023,2.08577,2700