Year,Value,NumPoints
1855,12.8868,598
1856,12.2298,598
1857,12.4442,598
1858,12.3966,598
1859,12.5969,598
1860,12.0138,598
1861,12.498,598
1862,12.4333,598
1863,12.4961,598
1864,12.5871,598
1865,12.5496,598
1866,12.5114,598
1867,12.4776,598
1868,12.5314,598
1869,12.1159,598
1870,12.1091,598
1871,12.3751,598
1872,12.2993,598
1873,12.6431,598
1874,12.6403,598
1875,12.794,598
1876,13.0173,598
1877,12.9763,598
1878,12.3202,598
1879,12.5787,598
1880,12.625,598
1881,12.6116,598
1882,12.8279,598
1883,13.4225,598
1884,12.5861,598
1885,12.1407,598
1886,12.4455,598
1887,12.1253,598
1888,13.0401,598
1889,12.5913,598
1890,12.4005,598
1891,12.6982,598
1892,12.6714,598
1893,12.1293,598
1894,12.5623,598
1895,12.2101,598
1896,12.375,598
1897,11.797,598
1898,12.4865,598
1899,12.6417,598
1900,12.5381,598
1901,12.1301,598
1902,11.9983,598
1903,11.6827,598
1904,11.4876,598
1905,12.0666,598
1906,11.7662,598
1907,12.1761,598
1908,11.254,598
1909,12.0414,598
1910,11.8866,598
1911,11.5927,598
1912,11.8371,598
1913,11.6148,598
1914,12.2519,598
1915,12.1584,598
1916,12.0374,598
1917,12.6543,598
1918,12.4691,598
1919,12.3247,598
1920,12.4308,598
1921,12.8373,598
1922,12.2876,598
1923,12.4336,598
1924,12.3241,598
1925,12.5774,598
1926,12.4008,598
1927,12.4197,598
1928,12.4109,598
1929,12.2301,598
1930,12.4952,598
1931,12.0576,598
1932,12.0534,598
1933,12.329,598
1934,12.3731,598
1935,12.3859,598
1936,12.6609,598
1937,12.5003,598
1938,12.5742,598
1939,12.559,598
1940,12.3289,598
1941,12.2532,598
1942,12.4579,598
1943,12.752,598
1944,13.1311,598
1945,12.6571,598
1946,12.2357,598
1947,12.2723,598
1948,12.8306,598
1949,12.8641,598
1950,12.7882,598
1951,12.8423,598
1952,12.6717,598
1953,12.4925,598
1954,12.4167,598
1955,12.697,598
1956,12.9499,598
1957,12.8455,598
1958,12.6848,598
1959,12.7802,598
1960,12.4766,598
1961,12.8356,598
1962,13.0406,598
1963,13.0593,598
1964,12.4219,598
1965,12.3233,598
1966,12.381,598
1967,13.1732,598
1968,12.657,598
1969,12.4264,598
1970,12.5604,598
1971,12.0942,598
1972,12.5423,598
1973,12.3353,598
1974,12.5481,598
1975,12.3227,598
1976,11.8339,598
1977,12.6671,598
1978,12.5684,598
1979,12.5842,598
1980,12.3108,598
1981,12.5832,598
1982,12.2939,598
1983,12.2658,598
1984,12.5854,598
1985,12.2091,598
1986,12.5135,598
1987,11.9274,598
1988,12.1977,598
1989,12.8747,598
1990,13.012,598
1991,12.7491,598
1992,12.5169,598
1993,12.4525,598
1994,13.0456,598
1995,12.4767,598
1996,12.802,598
1997,12.803,598
1998,12.8912,598
1999,12.4536,598
2000,13.0069,598
2001,12.6266,598
2002,12.8011,598
2003,12.834,598
2004,13.2279,598
2005,13.194,598
2006,12.8465,598
2007,12.659,598
2008,13.0031,598
2009,12.8151,598
2010,12.786,598
2011,13.0362,598
2012,12.9008,598
2013,13.3693,598
2014,13.6352,598
2015,13.4009,598
2016,13.5266,598
2017,13.0958,598
2018,13.4998,598
2019,13.6865,598
2020,13.769,598
2021,13.6502,598
2022,14.0346,598