Year,Value,NumPoints 1851,-0.571446,850 1852,-1.75398,850 1853,0.147919,850 1854,0.0698772,850 1855,0.933874,850 1856,0.721278,850 1857,-3.00224,850 1858,-0.464636,850 1859,-2.08087,850 1860,-0.140537,850 1861,-0.0254935,850 1862,-1.41109,850 1863,0.411928,844 1864,-0.875174,849 1865,-1.01097,843 1866,0.243499,842 1867,-0.597414,842 1868,-0.882402,849 1869,-1.10149,845 1870,0.514862,850 1871,0.123612,850 1872,-0.61081,843 1873,-1.78416,850 1874,-2.71507,850 1875,-1.75807,850 1876,-0.338812,850 1877,-1.04028,850 1878,1.11939,850 1879,0.269827,850 1880,-0.405839,850 1881,-0.338306,850 1882,-0.4963,850 1883,-0.861071,850 1884,-1.45663,850 1885,0.146554,850 1886,-0.0818193,850 1887,-0.206726,850 1888,0.932948,850 1889,1.25652,850 1890,0.338806,850 1891,0.339837,850 1892,-1.09758,850 1893,-0.87063,850 1894,0.553757,850 1895,0.93096,850 1896,0.511165,850 1897,-0.135242,850 1898,-0.260383,850 1899,-0.385704,850 1900,0.138762,850 1901,-1.04777,850 1902,-0.237505,850 1903,-0.528252,850 1904,-0.997651,850 1905,-0.455427,850 1906,0.770881,850 1907,-2.03243,850 1908,0.753288,850 1909,-1.25003,850 1910,1.28785,850 1911,-0.653566,850 1912,-0.372657,850 1913,0.15126,850 1914,-0.133632,850 1915,1.77457,850 1916,-0.549423,850 1917,-1.41457,850 1918,-1.20552,850 1919,0.0154903,850 1920,-2.43564,850 1921,-0.12303,850 1922,-0.510918,850 1923,-0.735538,850 1924,-0.572419,850 1925,1.87191,850 1926,-0.645525,850 1927,0.170665,850 1928,-1.68479,850 1929,-0.01073,850 1930,1.69102,850 1931,-0.127843,850 1932,0.172302,850 1933,-0.767451,850 1934,1.28012,850 1935,-0.834115,850 1936,-0.593516,850 1937,-0.578519,850 1938,0.269168,850 1939,0.1454,850 1940,-0.578321,850 1941,0.433652,850 1942,1.01942,850 1943,0.918788,850 1944,-1.13846,850 1945,-0.51212,850 1946,1.87749,850 1947,-0.103492,850 1948,1.19771,850 1949,0.57661,850 1950,-1.25969,850 1951,-0.68648,850 1952,0.35105,850 1953,-1.19301,850 1954,1.67345,850 1955,1.00142,850 1956,-0.898418,850 1957,-0.135814,850 1958,-0.390775,850 1959,0.313233,850 1960,0.843183,850 1961,-1.2189,850 1962,0.457683,850 1963,0.510991,850 1964,0.187871,850 1965,0.495998,850 1966,-0.539191,850 1967,0.0533889,850 1968,-0.190035,850 1969,0.919639,850 1970,-0.779029,850 1971,-0.341067,850 1972,-0.0521162,850 1973,-1.10162,850 1974,0.353019,850 1975,-2.15056,850 1976,0.550265,850 1977,1.70174,850 1978,0.362497,850 1979,-0.405894,850 1980,0.307478,850 1981,2.26225,850 1982,-1.18392,850 1983,-2.04438,850 1984,-0.691172,850 1985,1.81361,850 1986,1.03108,850 1987,1.37214,850 1988,0.443666,850 1989,1.00664,850 1990,0.827525,850 1991,0.843082,850 1992,0.820314,850 1993,-0.569032,850 1994,0.898746,850 1995,-0.81347,850 1996,-0.200232,850 1997,-1.63147,850 1998,0.0795525,850 1999,0.308351,850 2000,0.871917,850 2001,1.08923,850 2002,1.35695,850 2003,0.475799,850 2004,0.893943,850 2005,0.650431,850 2006,2.26523,850 2007,-0.271901,850 2008,-0.322981,850 2009,-0.0596996,850 2010,1.19869,850 2011,0.521135,850 2012,1.98454,850 2013,-0.729981,850 2014,0.303111,850 2015,1.13632,850 2016,1.14111,850 2017,1.48364,850 2018,-1.05487,850 2019,0.967147,850