Year,Value,NumPoints
1949,-20.8536,1012
1950,-23.0611,1012
1951,-24.0219,1012
1952,-20.9077,1012
1953,-22.2675,1012
1954,-22.8429,1012
1955,-23.408,1012
1956,-21.0564,1012
1957,-20.8635,1012
1958,-21.3174,1012
1959,-22.1857,1012
1960,-21.9594,1012
1961,-22.8923,1012
1962,-21.3533,1012
1963,-23.7365,1012
1964,-23.0013,1012
1965,-22.1503,1012
1966,-21.844,1012
1967,-24.339,1012
1968,-22.7255,1012
1969,-20.692,1012
1970,-20.1605,1012
1971,-19.6468,1012
1972,-22.6334,1012
1973,-21.7224,1012
1974,-22.5174,1012
1975,-20.8029,1012
1976,-20.6855,1012
1977,-22.1341,1012
1978,-22.2427,1012
1979,-25.6787,1012
1980,-20.3192,1012
1981,-20.4004,1012
1982,-20.4814,1012
1983,-21.519,1012
1984,-20.8465,1012
1985,-21.7744,1012
1986,-21.2106,1012
1987,-24.0317,1012
1988,-19.6405,1012
1989,-18.8188,1012
1990,-20.8676,1012
1991,-22.1404,1012
1992,-20.1959,1012
1993,-19.8979,1012
1994,-20.5698,1012
1995,-18.0374,1012
1996,-21.6135,1012
1997,-21.4853,1012
1998,-24.0601,1012
1999,-21.0989,1012
2000,-18.8632,1012
2001,-19.5045,1012
2002,-22.729,1012
2003,-21.7808,1012
2004,-22.0871,1012
2005,-18.225,1012
2006,-18.3605,1012
2007,-17.8722,1012
2008,-19.9739,1012
2009,-20.5604,1012
2010,-18.5676,1012
2011,-18.961,1012
2012,-17.6909,1012
2013,-22.2091,1012
2014,-16.1966,1012
2015,-19.443,1012
2016,-14.5543,1012
2017,-17.7916,1012
2018,-14.9107,1012
2019,-18.7708,1012
2020,-19.0606,1012