Year,Value,NumPoints 1900,-0.343954,420 1901,0.207098,420 1902,-0.354741,420 1903,-0.274473,420 1904,-1.2288,416 1905,-1.02666,416 1906,0.29664,407 1907,-0.69614,416 1908,-0.285776,411 1909,-0.0528192,413 1910,-0.154877,420 1911,-0.275181,411 1912,0.456477,415 1913,-0.83968,409 1914,-1.08942,415 1915,0.533371,415 1916,0.496382,413 1917,-0.0569631,415 1918,0.700009,413 1919,0.13335,413 1920,-0.471787,413 1921,-0.833873,415 1922,-1.15334,425 1923,0.252626,425 1924,-0.340695,425 1925,0.559862,423 1926,0.0124405,425 1927,0.193344,425 1928,0.735886,425 1929,0.180002,425 1930,0.673666,427 1931,1.25255,443 1932,0.415603,443 1933,-0.0407261,443 1934,-0.218118,427 1935,0.486614,427 1936,-0.0777955,443 1937,0.809331,443 1938,1.85289,443 1939,0.194735,443 1940,1.25305,443 1941,-0.299323,443 1942,0.37487,443 1943,0.279324,429 1944,0.235146,429 1945,-0.57494,429 1946,-0.270849,443 1947,-0.262432,443 1948,0.179792,443 1949,0.617839,443 1950,0.46565,443 1951,0.829949,443 1952,-0.345676,443 1953,0.43598,443 1954,0.631014,443 1955,-0.0969681,443 1956,-1.13021,445 1957,0.890486,445 1958,0.456602,445 1959,-0.267062,445 1960,0.142378,445 1961,-0.889052,445 1962,-0.110382,445 1963,-0.475139,445 1964,-0.0227897,445 1965,-0.715987,445 1966,1.01274,445 1967,-0.0258317,445 1968,0.165332,445 1969,0.0460595,445 1970,-0.383459,445 1971,0.0800259,445 1972,-1.36281,445 1973,0.681935,445 1974,-0.548168,445 1975,-0.399116,445 1976,1.06276,445 1977,0.515375,445 1978,0.203308,445 1979,0.235497,445 1980,-0.612543,445 1981,0.483689,445 1982,-0.483675,445 1983,0.00489263,445 1984,-0.332125,445 1985,0.639962,445 1986,0.145783,445 1987,0.965579,445 1988,0.745526,445 1989,0.195651,445 1990,0.462856,445 1991,0.768924,445 1992,-1.83514,445 1993,0.19662,445 1994,0.26965,445 1995,1.5523,445 1996,0.325089,445 1997,0.657547,445 1998,1.88583,445 1999,0.832812,445 2000,0.141791,445 2001,1.89569,445 2002,1.66457,445 2003,1.05475,445 2004,-0.205492,445 2005,0.626214,445 2006,2.3865,445 2007,0.596961,445 2008,0.653336,445 2009,1.28476,445 2010,1.79595,445 2011,1.60278,445 2012,2.14016,445 2013,0.803775,445 2014,0.683677,445 2015,0.694833,445 2016,1.58583,445 2017,1.52697,445 2018,-0.0082751,445 2019,2.25556,445 2020,0.765453,445 2021,1.06746,445 2022,2.29281,445