Year,Value,NumPoints 1900,3.85041,12 1901,3.40499,12 1902,3.61437,12 1903,2.82931,12 1904,3.0499,12 1905,2.70843,12 1906,3.22483,12 1907,3.71105,12 1908,2.88986,12 1909,2.97771,12 1910,3.0619,12 1911,3.01508,12 1912,2.93832,12 1913,3.05625,12 1914,2.87002,12 1915,3.4112,12 1916,2.97256,12 1917,3.37318,12 1918,3.99925,12 1919,3.01283,12 1920,3.32291,12 1921,3.27151,12 1922,3.43559,12 1923,3.4235,12 1924,2.65792,12 1925,3.47941,12 1926,3.59809,12 1927,3.93819,12 1928,3.54271,12 1929,3.51592,12 1930,2.95487,12 1931,3.58783,12 1932,2.73771,12 1933,3.58499,12 1934,4.05251,12 1935,3.09182,12 1936,4.20275,12 1937,3.92558,12 1938,3.51553,12 1939,3.25535,12 1940,3.2491,12 1941,3.78772,12 1942,3.55727,12 1943,4.41824,12 1944,3.74448,12 1945,3.78548,12 1946,3.44841,12 1947,3.9106,12 1948,3.31296,12 1949,3.47705,12 1950,3.50555,12 1951,2.97707,12 1952,3.2438,12 1953,2.92802,12 1954,3.2071,12 1955,3.15959,12 1956,3.58642,12 1957,3.83216,12 1958,3.60092,12 1959,3.2687,12 1960,3.38961,12 1961,3.07625,12 1962,3.6164,12 1963,3.9878,12 1964,3.573,12 1965,3.31339,12 1966,3.29246,12 1967,3.29119,12 1968,3.18913,12 1969,3.30619,12 1970,3.45422,12 1971,3.8225,12 1972,3.40266,12 1973,3.14804,12 1974,3.81703,12 1975,3.47941,12 1976,3.13805,12 1977,3.1121,12 1978,3.23736,12 1979,3.3919,12 1980,3.30472,12 1981,3.33145,12 1982,3.9418,12 1983,3.39386,12 1984,3.69439,12 1985,3.83726,12 1986,3.6433,12 1987,3.75324,12 1988,3.3684,12 1989,3.49787,12 1990,3.71067,12 1991,4.31972,12 1992,3.76746,12 1993,3.42614,12 1994,3.47048,12 1995,3.78895,12 1996,4.15799,12 1997,4.52724,12 1998,3.97229,12 1999,3.47355,12 2000,3.08012,12 2001,3.0158,12 2002,3.28654,12 2003,3.72059,12 2004,3.83626,12 2005,3.56977,12 2006,3.95176,12 2007,4.00027,12 2008,3.40967,12 2009,3.83828,12 2010,3.46351,12 2011,3.88646,12 2012,3.59081,12 2013,3.79707,12 2014,3.97065,12 2015,4.09544,12 2016,3.65043,12 2017,3.78491,12 2018,4.36279,12 2019,4.36315,12 2020,4.21706,12 2021,4.10505,12 2022,4.30885,12 2023,4.68502,12