Year,Value,NumPoints 1851,0.0328352,2765 1852,-0.228772,2507 1853,-0.052667,2733 1854,-0.232952,2478 1855,-0.389779,2336 1856,-0.465087,2374 1857,-0.685968,2272 1858,-0.0970616,2400 1859,-0.413748,2556 1860,-0.18546,2517 1861,-0.406613,2423 1862,-1.04203,2868 1863,-0.318504,2872 1864,-0.24674,2681 1865,-0.454693,2488 1866,-0.38092,2510 1867,-0.419134,2568 1868,-0.342889,2325 1869,0.125481,4757 1870,-0.264372,3231 1871,-0.608328,3207 1872,-0.184053,2979 1873,-0.33843,4471 1874,0.117176,3852 1875,-0.32201,3839 1876,-0.341678,3905 1877,-0.0197818,4238 1878,0.353694,4253 1879,-0.133545,4300 1880,-0.546662,3971 1881,-0.545569,4177 1882,-0.530526,4674 1883,0.369746,5413 1884,-0.634793,5359 1885,-0.548427,5733 1886,-1.31554,5430 1887,-0.951207,5804 1888,-0.724213,5752 1889,0.0833734,5790 1890,-0.535461,5856 1891,-0.655162,5802 1892,-0.552793,5771 1893,-0.204638,5843 1894,-0.787731,5846 1895,-0.596706,5829 1896,-0.972563,5850 1897,-0.171888,5855 1898,-0.157218,5859 1899,-0.60576,5872 1900,-0.016807,5883 1901,-0.505496,5882 1902,-0.528944,5871 1903,-0.135062,5880 1904,0.376619,5881 1905,0.0585073,5883 1906,0.00557138,5881 1907,-0.0694752,5883 1908,-0.109809,5883 1909,-0.695799,5880 1910,-0.667895,5881 1911,0.296439,5882 1912,-0.593494,5881 1913,-0.673011,5884 1914,-0.547526,5884 1915,0.108122,5883 1916,0.0215236,5857 1917,-0.748821,5869 1918,-1.08206,5876 1919,-0.211552,5877 1920,0.530855,5878 1921,-0.00460402,5883 1922,-0.0487368,5883 1923,0.208083,5884 1924,-0.211427,5884 1925,-0.156653,5883 1926,0.242952,5883 1927,-0.0410719,5884 1928,0.414865,5884 1929,-0.298408,5884 1930,0.410509,5884 1931,0.0159701,5884 1932,0.476965,5884 1933,0.209847,5884 1934,0.332657,5884 1935,-0.065999,5884 1936,-0.268119,5884 1937,1.02403,5884 1938,1.50587,5884 1939,0.120321,5884 1940,1.4436,5883 1941,-0.425796,5884 1942,0.640455,5883 1943,1.10555,5884 1944,0.876104,5884 1945,0.751662,5883 1946,-0.0756306,5884 1947,1.24956,5884 1948,-0.336434,5884 1949,-0.187436,5884 1950,0.300887,5884 1951,0.274674,5884 1952,0.491841,5884 1953,0.664998,5884 1954,0.873127,5884 1955,0.246353,5884 1956,-0.0287856,5884 1957,0.530545,5884 1958,0.164062,5884 1959,0.364977,5884 1960,0.486746,5884 1961,-0.134867,5884 1962,0.264,5884 1963,-1.01811,5884 1964,-1.27825,5884 1965,-0.454053,5884 1966,-1.24455,5884 1967,0.0673996,5884 1968,0.167127,5884 1969,-0.233243,5884 1970,-0.214185,5884 1971,0.414345,5884 1972,0.120312,5884 1973,0.132798,5884 1974,0.0138634,5884 1975,-0.178685,5884 1976,0.382526,5884 1977,0.129947,5884 1978,-0.264775,5884 1979,-0.951357,5884 1980,0.21122,5884 1981,0.842684,5884 1982,-0.362964,5884 1983,0.146562,5884 1984,0.571777,5884 1985,0.235213,5884 1986,-0.38524,5884 1987,-0.365325,5884 1988,0.537321,5884 1989,0.668843,5884 1990,1.61506,5884 1991,0.699857,5884 1992,-0.16725,5884 1993,0.820014,5884 1994,0.361398,5884 1995,1.78876,5884 1996,0.508509,5884 1997,0.540778,5884 1998,0.904949,5884 1999,0.427537,5884 2000,0.992371,5884 2001,0.853834,5884 2002,1.12358,5884 2003,0.883583,5884 2004,0.419347,5884 2005,1.97931,5884 2006,2.49106,5884 2007,2.68827,5884 2008,1.71475,5884 2009,1.63153,5884 2010,2.85592,5884 2011,3.01749,5884 2012,2.97904,5884 2013,1.37038,5884 2014,2.38109,5884 2015,2.38834,5884 2016,3.63995,5884 2017,2.51537,5884 2018,2.92328,5884 2019,3.05701,5884