Year,Value,NumPoints
1949,-18.0956,1012
1950,-21.664,1012
1951,-21.145,1012
1952,-19.9725,1012
1953,-20.7133,1012
1954,-19.9485,1012
1955,-21.7143,1012
1956,-17.2728,1012
1957,-23.0051,1012
1958,-18.3747,1012
1959,-21.0437,1012
1960,-18.0223,1012
1961,-22.4997,1012
1962,-21.1989,1012
1963,-19.5314,1012
1964,-20.5043,1012
1965,-21.5982,1012
1966,-17.4078,1012
1967,-19.7382,1012
1968,-22.5633,1012
1969,-16.8578,1012
1970,-20.3978,1012
1971,-20.2784,1012
1972,-20.2554,1012
1973,-19.985,1012
1974,-21.974,1012
1975,-20.6865,1012
1976,-20.7056,1012
1977,-20.4764,1012
1978,-21.0304,1012
1979,-21.7465,1012
1980,-20.5837,1012
1981,-19.298,1012
1982,-18.7662,1012
1983,-18.6648,1012
1984,-19.4741,1012
1985,-17.183,1012
1986,-20.0514,1012
1987,-20.3712,1012
1988,-20.2375,1012
1989,-18.7534,1012
1990,-21.7998,1012
1991,-19.7843,1012
1992,-20.1274,1012
1993,-21.48,1012
1994,-19.937,1012
1995,-21.3452,1012
1996,-18.7649,1012
1997,-22.0255,1012
1998,-18.9895,1012
1999,-19.258,1012
2000,-18.3853,1012
2001,-16.7343,1012
2002,-17.8649,1012
2003,-19.4126,1012
2004,-18.9777,1012
2005,-16.6803,1012
2006,-18.274,1012
2007,-16.5631,1012
2008,-17.3244,1012
2009,-16.4165,1012
2010,-18.3528,1012
2011,-17.1977,1012
2012,-17.9762,1012
2013,-16.6693,1012
2014,-16.9451,1012
2015,-17.6942,1012
2016,-15.8644,1012
2017,-14.667,1012
2018,-17.3365,1012