year,value
1893,2.1003
1894,3.1699998
1895,1.2601
1896,1.8103
1897,1.8805
1898,2.0705998
1899,0.4004
1900,3.1804993
1901,1.6604002
1902,2.2705002
1903,2.9511993
1904,0.92999995
1905,2.1002002
1906,2.7001998
1907,2.0403
1908,2.9310997
1909,3.8305993
1910,6.940601
1911,3.0414
1912,4.8711987
1913,2.5309994
1914,2.8404999
1915,5.4001
1916,2.8402998
1917,1.9204999
1918,1.9710002
1919,3.5901995
1920,3.5704994
1921,2.4004993
1922,1.9199998
1923,1.241
1924,2.2807
1925,2.0313
1926,2.3916
1927,2.5201998
1928,2.8908002
1929,4.921299
1930,2.25
1931,1.1499999
1932,6.1215024
1933,3.8121977
1934,2.8511996
1935,4.642199
1936,3.6013992
1937,4.9214
1938,2.1326
1939,4.1018
1940,3.3823993
1941,3.481899
1942,4.7313004
1943,2.0716999
1944,4.0308995
1945,3.3722997
1946,4.3606997
1947,1.5317
1948,3.2113984
1949,5.0223002
1950,3.0711997
1951,3.1518984
1952,2.6814997
1953,3.0717995
1954,2.2312999
1955,2.1621
1956,1.0722
1957,1.3714
1958,1.6118002
1959,2.2414
1960,3.7917993
1961,3.2611992
1962,3.361899
1963,1.4426
1964,1.3315002
1965,3.0115995
1966,3.2215998
1967,1.7521001
1968,1.0314001
1969,3.5915992
1970,0.94210005
1971,5.9613
1972,2.5715
1973,5.7011003
1974,3.3419
1975,3.1417
1976,3.5415
1977,0.64150006
1978,1.5521998
1979,2.0318003
1980,1.7016001
1981,0.88250005
1982,3.0513995
1983,6.8912005
1984,1.6714001
1985,2.9812992
1986,2.3517997
1987,1.5214002
1988,2.0111
1989,2.1909997
1990,1.2818999
1991,2.8115985
1992,4.4111996
1993,3.4910986
1994,1.8619001
1995,1.3915
1996,2.8419993
1997,3.1824987
1998,3.9024987
1999,2.1022997
2000,2.7313993
2001,4.782199
2002,1.9715
2003,1.2013
2004,3.9710994
2005,3.1621985
2006,2.0616996
2007,6.0815
2008,4.8117995
2009,3.1018991
2010,5.4438987
2011,2.8990004
2012,4.030999
2013,3.479999
2014,2.7119992
2015,3.2029998
2016,8.1818
2017,4.8312993
2018,3.2617993
2019,5.8605003
2020,3.3899996
2021,2.87
2022,2.09
2023,6.8900003
2024,3.2706
2025,1.7220001
2026,0.90050006