Year,Value,NumPoints
1949,-15.8525,51
1950,-12.3911,51
1951,-21.5208,51
1952,-19.2333,51
1953,-20.2871,51
1954,-18.1163,51
1955,-12.7883,51
1956,-19.765,51
1957,-10.8062,51
1958,-14.656,51
1959,-17.0107,51
1960,-14.5485,51
1961,-12.3056,51
1962,-14.3321,51
1963,-10.6726,51
1964,-16.8349,51
1965,-17.8888,51
1966,-16.7733,51
1967,-14.4894,51
1968,-15.0208,51
1969,-17.8122,51
1970,-19.4397,51
1971,-21.0274,51
1972,-17.515,51
1973,-18.5035,51
1974,-17.1893,51
1975,-18.3421,51
1976,-15.6558,51
1977,-8.2685,51
1978,-9.41389,51
1979,-9.63822,51
1980,-16.5253,51
1981,-6.08368,51
1982,-16.8127,51
1983,-17.0372,51
1984,-14.7308,51
1985,-6.87281,51
1986,-14.522,51
1987,-12.6151,51
1988,-12.1235,51
1989,-21.979,51
1990,-17.9167,51
1991,-14.1884,51
1992,-14.5731,51
1993,-14.9819,51
1994,-13.5785,51
1995,-13.9458,51
1996,-17.1289,51
1997,-16.511,51
1998,-17.236,51
1999,-18.2845,51
2000,-16.6315,51
2001,-10.3178,51
2002,-13.3826,51
2003,-11.8364,51
2004,-17.003,51
2005,-12.6357,51
2006,-19.8977,51
2007,-14.6795,51
2008,-17.2491,51
2009,-16.3106,51
2010,-15.7184,51
2011,-12.1093,51
2012,-22.1826,51
2013,-12.041,51
2014,-7.49667,51
2015,-12.7043,51
2016,-7.43154,51
2017,-13.0395,51
2018,-13.0416,51
2019,-12.5541,51
2020,-19.1687,51