Year,Value,NumPoints
1949,-18.7184,80
1950,-18.4065,80
1951,-18.8443,80
1952,-18.261,80
1953,-17.6945,80
1954,-19.0361,80
1955,-18.4871,80
1956,-19.7218,80
1957,-16.6965,80
1958,-16.7037,80
1959,-14.7777,80
1960,-15.9915,80
1961,-14.6831,80
1962,-16.7023,80
1963,-14.185,80
1964,-15.2226,80
1965,-20.6769,80
1966,-17.0667,80
1967,-16.4588,80
1968,-15.9851,80
1969,-18.0699,80
1970,-13.939,80
1971,-18.9631,80
1972,-17.278,80
1973,-16.3285,80
1974,-18.5248,80
1975,-18.7935,80
1976,-18.7284,80
1977,-11.4861,80
1978,-13.5399,80
1979,-14.9468,80
1980,-16.0332,80
1981,-13.9636,80
1982,-16.5845,80
1983,-15.2419,80
1984,-16.4965,80
1985,-13.4626,80
1986,-12.5171,80
1987,-12.3246,80
1988,-13.9815,80
1989,-15.2728,80
1990,-18.4147,80
1991,-15.8034,80
1992,-16.681,80
1993,-14.7714,80
1994,-14.2698,80
1995,-15.2998,80
1996,-16.7468,80
1997,-15.3753,80
1998,-16.3072,80
1999,-19.2695,80
2000,-16.4589,80
2001,-10.9292,80
2002,-15.8002,80
2003,-11.6841,80
2004,-15.7643,80
2005,-14.0856,80
2006,-15.2024,80
2007,-15.6908,80
2008,-17.0199,80
2009,-16.0438,80
2010,-14.1927,80
2011,-15.9182,80
2012,-16.8844,80
2013,-15.612,80
2014,-12.9264,80
2015,-12.4772,80
2016,-11.2734,80
2017,-15.3612,80
2018,-11.7025,80
2019,-12.435,80
2020,-17.9175,80