Year,Value,NumPoints
1949,-24.1933,1012
1950,-22.1053,1012
1951,-26.1577,1012
1952,-21.3157,1012
1953,-21.9997,1012
1954,-22.3002,1012
1955,-21.462,1012
1956,-21.0764,1012
1957,-21.1841,1012
1958,-20.3528,1012
1959,-20.1788,1012
1960,-20.8846,1012
1961,-21.1722,1012
1962,-21.9812,1012
1963,-23.7288,1012
1964,-26.5823,1012
1965,-22.1254,1012
1966,-24.2993,1012
1967,-23.6595,1012
1968,-20.5012,1012
1969,-19.8064,1012
1970,-20.0046,1012
1971,-24.9859,1012
1972,-20.7255,1012
1973,-22.5466,1012
1974,-19.398,1012
1975,-23.4638,1012
1976,-20.8704,1012
1977,-15.8016,1012
1978,-20.2722,1012
1979,-19.5771,1012
1980,-21.3109,1012
1981,-20.0665,1012
1982,-22.3598,1012
1983,-21.2264,1012
1984,-18.4651,1012
1985,-19.3914,1012
1986,-22.4608,1012
1987,-22.4316,1012
1988,-20.2658,1012
1989,-24.7486,1012
1990,-19.5763,1012
1991,-20.6906,1012
1992,-22.5054,1012
1993,-22.8728,1012
1994,-19.4298,1012
1995,-19.5254,1012
1996,-20.351,1012
1997,-24.4087,1012
1998,-20.5502,1012
1999,-21.9407,1012
2000,-21.3795,1012
2001,-20.3795,1012
2002,-20.6733,1012
2003,-19.9004,1012
2004,-19.5033,1012
2005,-17.1723,1012
2006,-17.8962,1012
2007,-19.9752,1012
2008,-21.0356,1012
2009,-18.4236,1012
2010,-20.7433,1012
2011,-18.3746,1012
2012,-18.1456,1012
2013,-18.7368,1012
2014,-18.1088,1012
2015,-19.0877,1012
2016,-14.3524,1012
2017,-17.8793,1012
2018,-16.3147,1012
2019,-19.6697,1012