Year,Value,NumPoints 1900,-0.171863,420 1901,-0.772817,418 1902,-0.285949,417 1903,-0.815786,419 1904,-0.667232,415 1905,0.241866,415 1906,-0.624875,410 1907,-1.92286,413 1908,-0.0995754,420 1909,-1.11307,411 1910,-1.47222,419 1911,-0.892402,415 1912,0.580751,414 1913,-0.499328,413 1914,-1.59624,414 1915,0.302161,415 1916,0.127931,416 1917,-0.442874,415 1918,-2.47244,410 1919,-1.24512,413 1920,-0.755539,413 1921,-0.883969,414 1922,-0.91365,423 1923,-0.13631,426 1924,0.503753,426 1925,-0.709156,426 1926,1.08977,425 1927,0.214247,424 1928,0.452658,425 1929,1.17617,426 1930,0.428787,425 1931,0.856168,441 1932,0.492733,442 1933,-0.37311,443 1934,-0.566076,441 1935,0.273367,427 1936,0.0207906,435 1937,0.419981,443 1938,0.594317,443 1939,0.713815,443 1940,1.6359,443 1941,1.06069,443 1942,0.840986,443 1943,-0.0147495,441 1944,1.15078,429 1945,0.553907,429 1946,0.154081,441 1947,0.492818,443 1948,0.594862,443 1949,-0.562139,443 1950,-0.0955374,443 1951,-0.154182,443 1952,-0.252384,443 1953,1.16488,443 1954,0.0663475,443 1955,0.019204,443 1956,-0.504763,444 1957,-0.0126178,445 1958,0.608482,445 1959,-0.417752,445 1960,0.585409,445 1961,-0.0905945,445 1962,-0.025233,445 1963,0.525952,445 1964,-0.312881,445 1965,-0.158008,445 1966,-0.274789,445 1967,-0.412221,445 1968,0.0644073,445 1969,0.0846774,445 1970,0.376439,445 1971,-0.287621,445 1972,-1.48159,445 1973,-0.286462,445 1974,-0.331209,445 1975,-0.304073,445 1976,-0.318168,445 1977,1.21045,445 1978,0.0865812,445 1979,-0.216351,445 1980,1.07295,445 1981,1.13872,445 1982,0.0359038,445 1983,-0.651637,445 1984,0.0916461,445 1985,0.304885,445 1986,0.436431,445 1987,0.199591,445 1988,1.24388,445 1989,0.00980423,445 1990,0.200805,445 1991,0.0943767,445 1992,-0.294102,445 1993,0.507801,445 1994,0.483191,445 1995,0.786623,445 1996,0.532244,445 1997,0.565711,445 1998,1.66891,445 1999,1.23969,445 2000,0.914195,445 2001,1.49404,445 2002,0.734814,445 2003,2.14954,445 2004,1.0385,445 2005,1.46747,445 2006,2.09003,445 2007,1.46357,445 2008,0.934302,445 2009,0.909008,445 2010,2.71367,445 2011,1.92937,445 2012,1.67711,445 2013,1.1469,445 2014,1.44175,445 2015,1.33698,445 2016,2.61627,445 2017,1.80103,445 2018,1.48346,445 2019,2.26312,445 2020,1.50897,445 2021,1.92205,445 2022,1.84947,445