Year,Value,NumPoints 1949,-16.7024,1012 1950,-14.3055,1012 1951,-14.0192,1012 1952,-15.5437,1012 1953,-13.1799,1012 1954,-13.2105,1012 1955,-15.3962,1012 1956,-14.8443,1012 1957,-12.9224,1012 1958,-17.6282,1012 1959,-14.3009,1012 1960,-15.7586,1012 1961,-15.9584,1012 1962,-15.8167,1012 1963,-16.0928,1012 1964,-18.788,1012 1965,-15.3802,1012 1966,-16.318,1012 1967,-15.2356,1012 1968,-15.2842,1012 1969,-16.2471,1012 1970,-17.8921,1012 1971,-15.8849,1012 1972,-17.0535,1012 1973,-13.6856,1012 1974,-15.8126,1012 1975,-15.4812,1012 1976,-14.8678,1012 1977,-17.0553,1012 1978,-15.917,1012 1979,-17.6464,1012 1980,-16.154,1012 1981,-14.9961,1012 1982,-17.2233,1012 1983,-16.5187,1012 1984,-17.0509,1012 1985,-17.6007,1012 1986,-17.1537,1012 1987,-16.1009,1012 1988,-16.2726,1012 1989,-14.6297,1012 1990,-12.9632,1012 1991,-17.0131,1012 1992,-15.4362,1012 1993,-14.49,1012 1994,-14.3129,1012 1995,-10.5639,1012 1996,-14.2399,1012 1997,-15.8765,1012 1998,-13.6687,1012 1999,-15.6636,1012 2000,-14.4682,1012 2001,-16.7282,1012 2002,-16.4019,1012 2003,-13.4102,1012 2004,-12.7007,1012 2005,-14.6283,1012 2006,-12.2507,1012 2007,-11.3692,1012 2008,-13.695,1012 2009,-16.0228,1012 2010,-11.0846,1012 2011,-13.448,1012 2012,-12.068,1012 2013,-12.4566,1012 2014,-13.5157,1012 2015,-11.7669,1012 2016,-12.203,1012 2017,-11.9779,1012 2018,-11.9443,1012 2019,-11.7461,1012