Year,Value,NumPoints 1949,-54.5855,720 1950,-53.7406,720 1951,-54.7008,720 1952,-54.4414,720 1953,-54.1411,720 1954,-54.7644,720 1955,-53.7301,720 1956,-55.6301,720 1957,-53.5075,720 1958,-56.6282,720 1959,-51.0221,720 1960,-55.1266,720 1961,-51.7733,720 1962,-57.1132,720 1963,-51.1007,720 1964,-55.6082,720 1965,-56.8486,720 1966,-52.6821,720 1967,-56.0622,720 1968,-55.1088,720 1969,-54.4229,720 1970,-56.4548,720 1971,-54.0026,720 1972,-57.0639,720 1973,-55.4526,720 1974,-57.5587,720 1975,-54.6813,720 1976,-56.5815,720 1977,-54.9868,720 1978,-55.832,720 1979,-56.4505,720 1980,-54.0006,720 1981,-55.71,720 1982,-51.6964,720 1983,-56.2148,720 1984,-56.7305,720 1985,-55.4257,720 1986,-57.1914,720 1987,-54.1498,720 1988,-56.8342,720 1989,-55.4671,720 1990,-54.9488,720 1991,-56.567,720 1992,-55.1431,720 1993,-57.6312,720 1994,-57.1753,720 1995,-57.0161,720 1996,-59.0452,720 1997,-56.1238,720 1998,-57.8109,720 1999,-56.5655,720 2000,-58.3158,720 2001,-56.3971,720 2002,-58.2849,720 2003,-57.386,720 2004,-56.2748,720 2005,-59.4561,720 2006,-54.1971,720 2007,-60.0607,720 2008,-55.0568,720 2009,-59.1686,720 2010,-55.0969,720 2011,-59.0851,720 2012,-57.758,720 2013,-55.0321,720 2014,-58.3993,720 2015,-54.5374,720 2016,-56.3577,720 2017,-59.4965,720 2018,-56.4486,720 2019,-58.6543,720 2020,-56.4969,720 2021,-58.2508,720 2022,-54.5046,720