Year,Value,NumPoints 1949,-0.0952561,45 1950,-0.845965,45 1951,-1.00496,45 1952,-0.881753,45 1953,-3.51156,45 1954,-1.80037,45 1955,-2.90319,45 1956,-1.95481,45 1957,-1.96703,45 1958,-2.99608,45 1959,-1.55904,45 1960,-2.59251,45 1961,-3.41022,45 1962,-0.469512,45 1963,-2.44506,45 1964,-3.05378,45 1965,-2.58866,45 1966,-0.24948,45 1967,0.680147,45 1968,-1.45011,45 1969,-1.35868,45 1970,-3.91477,45 1971,-1.34685,45 1972,-1.29048,45 1973,-1.43057,45 1974,-2.54279,45 1975,-2.54525,45 1976,-2.78051,45 1977,-3.75507,45 1978,-2.1082,45 1979,0.299407,45 1980,-1.90864,45 1981,-3.40444,45 1982,-0.991783,45 1983,-3.72597,45 1984,-3.4214,45 1985,-1.42541,45 1986,-2.12306,45 1987,-2.6501,45 1988,-2.9793,45 1989,-0.411112,45 1990,-2.6142,45 1991,-1.56753,45 1992,-3.19212,45 1993,-0.583818,45 1994,-2.54247,45 1995,-2.28926,45 1996,-1.15023,45 1997,-2.31876,45 1998,-2.8481,45 1999,-1.8775,45 2000,-2.67447,45 2001,-1.60938,45 2002,-2.10605,45 2003,-3.5869,45 2004,-1.24527,45 2005,-1.63068,45 2006,-2.91171,45 2007,-2.54722,45 2008,-2.90886,45 2009,-2.22421,45 2010,-3.42105,45 2011,-1.17336,45 2012,-2.64198,45 2013,-3.05669,45 2014,-2.40247,45 2015,-3.00572,45 2016,-3.36056,45 2017,-1.09334,45 2018,0.767981,45 2019,0.136965,45 2020,-1.53682,45 2021,-0.877208,45