Year,Value,NumPoints 1851,-0.583425,850 1852,-1.00399,850 1853,0.17266,850 1854,-0.723895,850 1855,-0.453495,850 1856,1.44163,850 1857,-0.524076,850 1858,0.146862,850 1859,0.325835,850 1860,-0.167909,850 1861,0.505862,844 1862,-0.402978,850 1863,-0.314464,849 1864,-0.0933866,850 1865,0.623618,845 1866,-0.937335,843 1867,0.349066,844 1868,-0.234039,849 1869,-0.38369,850 1870,0.52654,850 1871,1.26402,850 1872,0.240596,844 1873,0.335661,850 1874,0.52765,850 1875,-0.228927,850 1876,0.0251811,850 1877,-0.64779,850 1878,-0.372236,850 1879,-0.292997,850 1880,0.000132419,850 1881,0.507937,850 1882,-0.327261,850 1883,0.18455,850 1884,-0.262634,850 1885,-0.768539,850 1886,-0.124264,850 1887,0.160084,850 1888,-0.201863,850 1889,-0.521283,850 1890,0.171337,850 1891,-0.923053,850 1892,-0.538433,850 1893,-0.054074,850 1894,-0.392476,850 1895,-0.542138,850 1896,0.514198,850 1897,-0.549772,850 1898,0.0375694,850 1899,-0.234814,850 1900,0.67666,850 1901,-0.353335,850 1902,-0.525309,850 1903,-1.59341,850 1904,-0.86878,850 1905,-0.5383,850 1906,-0.842921,850 1907,-1.73942,850 1908,-1.07073,850 1909,-0.0748161,850 1910,-0.342104,850 1911,0.966921,850 1912,-1.19899,850 1913,-0.377209,850 1914,0.251916,850 1915,-1.54621,850 1916,-1.43205,850 1917,-1.14087,850 1918,1.09182,850 1919,0.136426,850 1920,-0.927367,850 1921,0.710425,850 1922,0.618348,850 1923,-0.50165,850 1924,-0.224586,850 1925,0.450601,850 1926,-0.456779,850 1927,-0.979178,850 1928,-1.6445,850 1929,-0.782005,850 1930,-0.298306,850 1931,0.896867,850 1932,0.155473,850 1933,1.387,850 1934,0.916446,850 1935,-0.689508,850 1936,0.891182,850 1937,-0.0226497,850 1938,-0.0716234,850 1939,-0.0177682,850 1940,0.334373,850 1941,-0.554317,850 1942,-0.410891,850 1943,0.0329587,850 1944,-0.204678,850 1945,-1.56456,850 1946,-0.300751,850 1947,-1.11279,850 1948,-0.0104873,850 1949,0.320837,850 1950,-0.414893,850 1951,-1.10769,850 1952,1.11798,850 1953,0.818361,850 1954,0.128886,850 1955,-1.11425,850 1956,0.886932,850 1957,0.0786818,850 1958,-0.362368,850 1959,0.749429,850 1960,0.270535,850 1961,0.506011,850 1962,-0.340839,850 1963,0.0778296,850 1964,-0.263386,850 1965,-0.921542,850 1966,-0.300338,850 1967,-0.524795,850 1968,-0.0128682,850 1969,-0.880247,850 1970,0.134696,850 1971,0.520249,850 1972,-0.169832,850 1973,0.290524,850 1974,0.0305689,850 1975,-0.453697,850 1976,-0.307594,850 1977,1.00863,850 1978,0.278091,850 1979,-0.322873,850 1980,0.184916,850 1981,0.785752,850 1982,-1.14553,850 1983,-0.668826,850 1984,0.0781709,850 1985,-0.158722,850 1986,1.05134,850 1987,1.04027,850 1988,1.32397,850 1989,-0.152161,850 1990,0.961904,850 1991,0.416003,850 1992,-0.514444,850 1993,-0.62976,850 1994,1.35449,850 1995,-0.400167,850 1996,0.751379,850 1997,-0.0285622,850 1998,-0.0435795,850 1999,0.030741,850 2000,0.373836,850 2001,0.507612,850 2002,1.3733,850 2003,-0.165949,850 2004,-0.115652,850 2005,0.534292,850 2006,1.34125,850 2007,0.853247,850 2008,0.668006,850 2009,0.123208,850 2010,1.24653,850 2011,0.825859,850 2012,1.3261,850 2013,1.12498,850 2014,0.632468,850 2015,1.59833,850 2016,1.88834,850 2017,1.10875,850 2018,1.73709,850 2019,0.210648,850