Year,Value,NumPoints
1949,-8.48474,51
1950,-12.783,51
1951,-9.12407,51
1952,-7.15901,51
1953,-11.2751,51
1954,-9.17597,51
1955,-15.6253,51
1956,-15.5639,51
1957,-7.43072,51
1958,-11.8409,51
1959,-10.017,51
1960,-13.6272,51
1961,-12.5236,51
1962,-11.3517,51
1963,-16.6806,51
1964,-11.3959,51
1965,-8.29382,51
1966,-9.71496,51
1967,-9.21114,51
1968,-11.3425,51
1969,-13.0094,51
1970,-8.65063,51
1971,-11.3747,51
1972,-10.2013,51
1973,-12.748,51
1974,-13.4243,51
1975,-15.6203,51
1976,-7.66804,51
1977,-14.9698,51
1978,-7.67278,51
1979,-4.99393,51
1980,-9.48978,51
1981,-10.3949,51
1982,-11.4729,51
1983,-8.43477,51
1984,-12.9708,51
1985,-11.3252,51
1986,-11.6222,51
1987,-11.905,51
1988,-15.2763,51
1989,-15.3719,51
1990,-14.406,51
1991,-12.6841,51
1992,-9.85858,51
1993,-8.82054,51
1994,-13.8415,51
1995,-12.5616,51
1996,-10.8367,51
1997,-7.80521,51
1998,-9.88874,51
1999,-13.8469,51
2000,-8.10154,51
2001,-12.6632,51
2002,-5.08978,51
2003,-9.10504,51
2004,-8.27223,51
2005,-15.13,51
2006,-13.9336,51
2007,-6.83308,51
2008,-11.8308,51
2009,-13.2911,51
2010,-7.71049,51
2011,-14.5662,51
2012,-12.9357,51
2013,-9.40425,51
2014,-6.40411,51
2015,-7.52742,51
2016,-9.80122,51
2017,-7.91767,51
2018,-6.91782,51
2019,-7.14131,51