Year,Value,NumPoints 1949,23.5493,3600 1950,23.4689,3600 1951,23.7663,3600 1952,23.7483,3600 1953,23.8343,3600 1954,23.4509,3600 1955,23.4463,3600 1956,23.3579,3600 1957,23.9251,3600 1958,23.9127,3600 1959,23.8289,3600 1960,23.7722,3600 1961,23.6693,3600 1962,23.6724,3600 1963,23.7492,3600 1964,23.5249,3600 1965,23.6625,3600 1966,23.8116,3600 1967,23.7731,3600 1968,23.89,3600 1969,24.0842,3600 1970,23.8654,3600 1971,23.6033,3600 1972,24.0328,3600 1973,24.016,3600 1974,23.7725,3600 1975,23.6476,3600 1976,23.7019,3600 1977,24.0366,3600 1978,23.8859,3600 1979,24.1185,3600 1980,24.1442,3600 1981,23.9659,3600 1982,24.0553,3600 1983,24.1967,3600 1984,23.9117,3600 1985,23.9305,3600 1986,24.0482,3600 1987,24.3968,3600 1988,24.0687,3600 1989,23.8791,3600 1990,24.0711,3600 1991,24.1307,3600 1992,23.925,3600 1993,23.9329,3600 1994,23.8266,3600 1995,24.1986,3600 1996,23.9594,3600 1997,24.3081,3600 1998,24.4238,3600 1999,24.0025,3600 2000,23.9525,3600 2001,24.1938,3600 2002,24.2583,3600 2003,24.2489,3600 2004,24.0957,3600 2005,24.363,3600 2006,24.3014,3600 2007,24.2651,3600 2008,24.2246,3600 2009,24.42,3600 2010,24.2799,3600 2011,24.1712,3600 2012,24.2609,3600 2013,24.2426,3600 2014,24.3874,3600 2015,24.5975,3600 2016,24.5415,3600 2017,24.5759,3600 2018,24.3017,3600 2019,24.5356,3600 2020,24.4482,3600 2021,24.368,3600 2022,24.2351,3600 2023,24.9106,3600