Year,Value,NumPoints 1855,6.61212,13 1856,5.833,13 1857,5.83388,13 1858,5.67447,13 1859,4.95324,13 1860,5.3101,13 1861,5.56418,13 1862,5.5689,13 1863,6.35291,13 1864,5.63644,13 1865,5.59998,13 1866,5.16733,13 1867,5.60427,13 1868,5.57905,13 1869,5.63572,13 1870,5.94581,13 1871,5.8443,13 1872,5.65595,13 1873,5.46064,13 1874,5.36478,13 1875,5.03853,13 1876,5.70509,13 1877,5.62731,13 1878,6.25515,13 1879,5.00529,13 1880,6.42601,13 1881,5.60902,13 1882,5.01057,13 1883,5.68684,13 1884,6.93538,13 1885,6.41856,13 1886,4.19337,13 1887,4.05384,13 1888,4.71517,13 1889,6.50312,13 1890,5.09265,13 1891,4.96866,13 1892,4.83504,13 1893,4.52676,13 1894,4.95097,13 1895,5.19162,13 1896,5.74352,13 1897,4.79147,13 1898,5.90735,13 1899,5.60149,13 1900,5.4415,13 1901,4.43802,13 1902,4.34025,13 1903,5.65537,13 1904,3.86975,13 1905,5.63522,13 1906,6.15215,13 1907,4.21784,13 1908,4.70698,13 1909,3.15331,13 1910,4.50515,13 1911,3.47846,13 1912,4.68223,13 1913,7.54779,13 1914,5.29851,13 1915,6.40439,13 1916,3.98143,13 1917,4.60699,13 1918,4.08926,13 1919,3.96928,13 1920,5.13688,13 1921,5.26069,13 1922,4.46996,13 1923,4.46932,13 1924,5.14294,13 1925,4.96678,13 1926,6.9846,13 1927,6.6959,13 1928,5.11977,13 1929,5.88324,13 1930,6.2908,13 1931,6.0869,13 1932,5.46045,13 1933,6.20278,13 1934,5.71314,13 1935,5.47086,13 1936,6.5152,13 1937,5.80682,13 1938,6.57913,13 1939,6.02088,13 1940,5.93561,13 1941,7.23042,13 1942,7.08583,13 1943,5.42328,13 1944,5.85093,13 1945,6.02792,13 1946,5.25869,13 1947,5.14716,13 1948,4.00912,13 1949,4.12398,13 1950,5.35656,13 1951,5.43202,13 1952,5.63864,13 1953,5.65692,13 1954,5.85113,13 1955,6.66006,13 1956,5.60405,13 1957,5.14166,13 1958,6.63109,13 1959,6.57387,13 1960,5.91134,13 1961,6.01917,13 1962,5.89269,13 1963,6.30382,13 1964,6.45897,13 1965,4.51121,13 1966,4.84611,13 1967,5.49378,13 1968,5.53801,13 1969,4.75997,13 1970,6.00173,13 1971,5.46909,13 1972,4.60333,13 1973,4.79203,13 1974,5.05493,13 1975,5.05779,13 1976,5.03726,13 1977,6.16169,13 1978,5.47534,13 1979,5.67254,13 1980,5.58025,13 1981,6.01475,13 1982,5.83249,13 1983,6.03904,13 1984,6.52703,13 1985,6.43589,13 1986,5.72807,13 1987,6.74873,13 1988,6.33044,13 1989,5.67735,13 1990,5.81096,13 1991,5.32805,13 1992,5.98425,13 1993,5.65096,13 1994,6.39718,13 1995,5.4938,13 1996,5.51531,13 1997,5.00219,13 1998,6.34763,13 1999,6.15319,13 2000,5.49227,13 2001,6.16984,13 2002,5.51855,13 2003,7.00266,13 2004,5.621,13 2005,6.01939,13 2006,6.07438,13 2007,5.21326,13 2008,5.05055,13 2009,5.11881,13 2010,6.11338,13 2011,6.20356,13 2012,5.01566,13 2013,5.93679,13 2014,6.21864,13 2015,7.04842,13 2016,6.89981,13 2017,6.6539,13 2018,6.28709,13 2019,6.86148,13 2020,6.56387,13 2021,6.06061,13 2022,5.18416,13