Year,Value,NumPoints 1900,19.835,8281 1901,19.7253,8281 1902,19.6399,8281 1903,19.4344,8281 1904,19.3932,8281 1905,19.6906,8281 1906,19.6537,8281 1907,19.6052,8281 1908,19.4519,8281 1909,19.4622,8281 1910,19.459,8281 1911,19.4439,8281 1912,19.5516,8281 1913,19.5354,8281 1914,19.7407,8281 1915,19.7683,8281 1916,19.6259,8281 1917,19.7614,8281 1918,19.6974,8281 1919,19.4754,8281 1920,19.6565,8281 1921,19.7699,8281 1922,19.6085,8281 1923,19.5697,8281 1924,19.5305,8281 1925,19.7295,8281 1926,19.7401,8281 1927,19.7476,8281 1928,19.6732,8281 1929,19.6322,8281 1930,19.7249,8281 1931,19.7992,8281 1932,19.6676,8281 1933,19.6358,8281 1934,19.7929,8281 1935,19.6913,8281 1936,19.7309,8281 1937,19.9185,8281 1938,19.7976,8281 1939,19.8674,8281 1940,20.0443,8281 1941,20.1064,8281 1942,19.9215,8281 1943,19.9687,8281 1944,20.1709,8281 1945,20.1807,8281 1946,19.7367,8281 1947,19.8181,8281 1948,19.8163,8281 1949,19.7979,8281 1950,19.8877,8281 1951,20.0027,8281 1952,19.9701,8281 1953,19.9372,8281 1954,19.7479,8281 1955,19.7861,8281 1956,19.8266,8281 1957,20.0709,8281 1958,20.0422,8281 1959,19.9734,8281 1960,19.9824,8281 1961,19.969,8281 1962,19.9923,8281 1963,20.0758,8281 1964,19.7943,8281 1965,19.9247,8281 1966,19.9147,8281 1967,19.9693,8281 1968,19.9735,8281 1969,20.0561,8281 1970,19.9482,8281 1971,19.873,8281 1972,20.0192,8281 1973,20.0111,8281 1974,19.9546,8281 1975,19.884,8281 1976,19.9435,8281 1977,20.0551,8281 1978,20.007,8281 1979,20.1763,8281 1980,20.1031,8281 1981,20.0888,8281 1982,20.0758,8281 1983,20.2205,8281 1984,20.1094,8281 1985,20.0233,8281 1986,20.1036,8281 1987,20.3337,8281 1988,20.2001,8281 1989,20.2512,8281 1990,20.2762,8281 1991,20.2373,8281 1992,20.0987,8281 1993,20.1377,8281 1994,20.1915,8281 1995,20.2772,8281 1996,20.2297,8281 1997,20.4147,8281 1998,20.4335,8281 1999,20.1672,8281 2000,20.2331,8281 2001,20.3717,8281 2002,20.3348,8281 2003,20.4457,8281 2004,20.4016,8281 2005,20.4518,8281 2006,20.4323,8281 2007,20.2853,8281 2008,20.382,8281 2009,20.5103,8281 2010,20.4229,8281 2011,20.3474,8281 2012,20.4517,8281 2013,20.4971,8281 2014,20.6127,8281 2015,20.6885,8281 2016,20.6653,8281 2017,20.6594,8281 2018,20.5765,8281 2019,20.6909,8281 2020,20.664,8281 2021,20.5879,8281 2022,20.6319,8281 2023,20.9666,8281