Year,Value,NumPoints
1950,-0.0921598,740
1951,-0.118787,801
1952,-0.00152558,823
1953,0.198152,825
1954,-0.0826169,840
1955,-0.0996939,849
1956,-0.276276,868
1957,0.0588105,875
1958,-0.0800197,872
1959,0.118768,890
1960,0.0644725,895
1961,0.0902459,916
1962,-0.152943,918
1963,-0.131291,923
1964,-0.246584,922
1965,-0.140078,925
1966,0.0645951,926
1967,-0.213586,931
1968,-0.288199,926
1969,-0.0835687,933
1970,0.0891725,934
1971,-0.29803,927
1972,-0.0521057,922
1973,0.263084,921
1974,-0.187872,916
1975,-0.0135219,919
1976,-0.305212,915
1977,0.216638,913
1978,-0.167284,914
1979,0.10955,913
1980,0.138363,914
1981,0.146173,900
1982,-0.1193,894
1983,0.116478,898
1984,0.0369826,895
1985,-0.0473552,900
1986,0.133729,890
1987,0.213022,895
1988,0.436011,887
1989,0.159452,884
1990,0.441884,885
1991,0.557967,859
1992,0.0395095,856
1993,0.217453,851
1994,0.404171,841
1995,0.534874,863
1996,0.254554,839
1997,0.525083,840
1998,0.895774,851
1999,0.459711,845
2000,0.438799,846
2001,0.543128,822
2002,0.655235,825
2003,0.680296,829
2004,0.481223,810
2005,0.865783,813
2006,0.862401,819
2007,0.631468,823
2008,0.608411,819
2009,0.653872,809
2010,1.005,809
2011,0.826422,801
2012,0.984593,808
2013,0.915042,794
2014,0.895796,782
2015,1.10857,786
2016,1.14879,765
2017,1.00627,746
2018,0.910888,731
2019,1.18954,697
2020,1.1383,692
2021,1.22799,700