Year,Value,NumPoints 1900,0.136328,338 1901,-0.3607,352 1902,-0.757757,363 1903,-0.662072,365 1904,-0.339812,368 1905,-0.105614,377 1906,-0.231784,388 1907,-0.463477,392 1908,-0.568104,396 1909,-0.183496,406 1910,-0.611752,415 1911,-0.186375,428 1912,-0.598631,434 1913,0.0573174,438 1914,-0.248253,439 1915,-0.088105,436 1916,-0.563097,441 1917,-0.727216,448 1918,-0.15088,439 1919,-0.563028,427 1920,-0.509369,434 1921,-0.303191,450 1922,-0.210204,461 1923,0.151838,479 1924,-0.253821,486 1925,-0.113202,494 1926,-0.151682,499 1927,-0.205419,504 1928,0.00740475,507 1929,-0.264761,522 1930,-0.0311907,520 1931,0.0806449,542 1932,-0.123625,550 1933,-0.437853,570 1934,0.147278,571 1935,-0.273289,581 1936,0.142863,604 1937,0.0246797,610 1938,0.126773,624 1939,0.190509,626 1940,0.0801339,633 1941,-0.0643891,653 1942,0.06808,662 1943,0.234817,660 1944,-0.084543,663 1945,-0.254877,676 1946,-0.282766,689 1947,0.0785236,704 1948,-0.0340716,719 1949,-0.0836662,732 1950,-0.418575,748 1951,0.179714,814 1952,-0.309592,823 1953,0.104161,825 1954,0.033549,836 1955,-0.308256,848 1956,-0.413822,863 1957,0.116056,878 1958,0.0197079,881 1959,-0.113942,890 1960,0.0365504,894 1961,-0.0845884,914 1962,0.0841155,918 1963,0.189931,916 1964,-0.372047,921 1965,-0.139406,923 1966,-0.22639,928 1967,0.0823069,927 1968,-0.262406,926 1969,0.139294,933 1970,-0.194054,931 1971,-0.0676331,927 1972,-0.085294,920 1973,-0.0769933,919 1974,-0.353611,916 1975,-0.272599,914 1976,-0.480867,914 1977,0.132724,913 1978,-0.0213078,914 1979,0.31916,903 1980,0.162648,912 1981,0.228969,899 1982,0.0467388,897 1983,0.296783,898 1984,-0.201022,895 1985,0.0123005,898 1986,-0.00878172,897 1987,0.307549,894 1988,0.298216,889 1989,0.229073,885 1990,0.492803,879 1991,0.231744,855 1992,-0.0765308,852 1993,0.0262197,846 1994,0.467653,857 1995,0.480223,860 1996,0.25316,837 1997,0.580691,837 1998,0.630818,847 1999,0.568716,840 2000,0.186506,841 2001,0.745577,815 2002,0.505598,826 2003,0.888066,827 2004,0.753609,815 2005,1.01154,814 2006,1.06751,814 2007,0.850026,816 2008,0.905186,822 2009,0.703359,802 2010,0.882418,813 2011,0.847824,790 2012,0.716591,797 2013,0.974205,791 2014,0.941611,781 2015,1.46507,781 2016,0.930305,760 2017,1.08708,750 2018,0.943961,717 2019,1.26257,698 2020,1.19719,683