Year,Value,NumPoints 1855,12.0206,50 1856,12.0471,50 1857,12.2487,50 1858,12.5439,50 1859,10.1387,50 1860,11.3549,50 1861,11.9325,50 1862,11.1121,50 1863,11.7641,50 1864,11.6763,50 1865,11.7461,50 1866,11.6121,50 1867,11.8393,50 1868,11.7173,50 1869,11.5649,50 1870,11.7433,50 1871,11.6849,50 1872,11.3842,50 1873,10.2361,50 1874,12.9473,50 1875,11.0287,50 1876,11.8481,50 1877,12.1411,50 1878,9.83816,50 1879,11.7723,50 1880,11.1018,50 1881,13.4336,50 1882,13.5829,50 1883,13.981,50 1884,13.6985,50 1885,9.63859,50 1886,11.3385,50 1887,9.86056,50 1888,12.9186,50 1889,11.3059,50 1890,10.2854,50 1891,10.9089,50 1892,11.1112,50 1893,10.9716,50 1894,11.5132,50 1895,11.5203,50 1896,9.97286,50 1897,9.08936,50 1898,12.6948,50 1899,11.8913,50 1900,12.5995,50 1901,9.6662,50 1902,10.5209,50 1903,11.4118,50 1904,11.0888,50 1905,12.1441,50 1906,11.1373,50 1907,10.287,50 1908,9.36929,50 1909,9.47982,50 1910,10.6759,50 1911,12.5413,50 1912,11.3664,50 1913,10.6767,50 1914,10.6037,50 1915,12.1352,50 1916,10.5122,50 1917,10.8479,50 1918,10.5854,50 1919,10.6017,50 1920,10.2482,50 1921,11.9174,50 1922,11.673,50 1923,11.4787,50 1924,10.1583,50 1925,11.6248,50 1926,12.7983,50 1927,11.2415,50 1928,10.9122,50 1929,11.8957,50 1930,12.3102,50 1931,11.9104,50 1932,10.7773,50 1933,10.48,50 1934,12.168,50 1935,12.1436,50 1936,13.249,50 1937,12.6155,50 1938,11.253,50 1939,11.3161,50 1940,11.683,50 1941,13.3431,50 1942,12.762,50 1943,11.2118,50 1944,12.0863,50 1945,12.1515,50 1946,10.6873,50 1947,10.3422,50 1948,10.9534,50 1949,12.2562,50 1950,11.0063,50 1951,12.1803,50 1952,11.9467,50 1953,11.9036,50 1954,12.7457,50 1955,10.9466,50 1956,12.0734,50 1957,12.9671,50 1958,12.0025,50 1959,11.2649,50 1960,11.5703,50 1961,11.9608,50 1962,12.1918,50 1963,13.1543,50 1964,11.466,50 1965,12.5056,50 1966,11.4053,50 1967,11.8371,50 1968,11.8656,50 1969,11.4148,50 1970,11.2323,50 1971,10.0673,50 1972,10.6604,50 1973,10.6748,50 1974,12.5777,50 1975,11.0025,50 1976,10.9158,50 1977,12.8669,50 1978,11.8204,50 1979,12.9563,50 1980,11.2213,50 1981,12.3835,50 1982,11.3617,50 1983,12.1774,50 1984,12.1886,50 1985,11.6893,50 1986,11.932,50 1987,11.7065,50 1988,11.1503,50 1989,12.8091,50 1990,12.461,50 1991,11.3307,50 1992,11.2504,50 1993,12.1565,50 1994,11.8602,50 1995,12.0967,50 1996,11.8863,50 1997,13.7266,50 1998,11.3369,50 1999,11.0702,50 2000,11.5869,50 2001,11.3321,50 2002,12.0973,50 2003,12.3428,50 2004,12.856,50 2005,12.9329,50 2006,11.4227,50 2007,12.1403,50 2008,11.2281,50 2009,11.2231,50 2010,12.2014,50 2011,11.1001,50 2012,11.2745,50 2013,12.4539,50 2014,13.6766,50 2015,12.3876,50 2016,13.6127,50 2017,12.0863,50 2018,13.2629,50 2019,13.935,50 2020,12.9429,50 2021,12.106,50 2022,13.1832,50