Year,Value,NumPoints
1949,-2.23759,398
1950,-8.88662,398
1951,-5.06037,398
1952,-3.05166,398
1953,-5.23283,398
1954,-7.54597,398
1955,-3.41434,398
1956,-5.20031,398
1957,-4.74946,398
1958,-4.76576,398
1959,-3.98059,398
1960,-5.888,398
1961,-5.11083,398
1962,-3.5864,398
1963,-9.82498,398
1964,-6.31919,398
1965,-5.57354,398
1966,-6.94797,398
1967,-7.68826,398
1968,-8.48686,398
1969,-9.01162,398
1970,-6.48459,398
1971,-3.71793,398
1972,-9.09744,398
1973,-6.38736,398
1974,-5.85064,398
1975,-3.46427,398
1976,-6.54837,398
1977,-6.7011,398
1978,-5.4102,398
1979,-7.46584,398
1980,-7.83215,398
1981,-4.86436,398
1982,-6.79452,398
1983,-2.95549,398
1984,-3.82112,398
1985,-8.83908,398
1986,-5.2294,398
1987,-10.3696,398
1988,-4.69281,398
1989,-3.75698,398
1990,-5.23747,398
1991,-5.39478,398
1992,-4.87897,398
1993,-3.80372,398
1994,-4.07863,398
1995,-4.39607,398
1996,-6.41609,398
1997,-6.8551,398
1998,-4.07897,398
1999,-5.13868,398
2000,-5.44441,398
2001,-3.68705,398
2002,-4.96612,398
2003,-6.55121,398
2004,-5.44133,398
2005,-3.04571,398
2006,-8.04263,398
2007,-1.4017,398
2008,-3.90493,398
2009,-5.53022,398
2010,-8.83009,398
2011,-5.57273,398
2012,-5.17387,398
2013,-5.58211,398
2014,-5.12581,398
2015,-4.04906,398
2016,-5.99062,398
2017,-6.23417,398
2018,-3.4767,398
2019,-5.44885,398
2020,-1.65483,398