year,value
1893,2.1003
1894,3.1699998
1895,1.2601
1896,1.8103
1897,1.8804998
1898,2.0706
1899,0.40039995
1900,3.1804998
1901,1.6604
1902,2.2705002
1903,2.9511998
1904,0.9299999
1905,2.1002002
1906,2.7001998
1907,2.0403
1908,2.9310997
1909,3.8305993
1910,6.9406
1911,3.0414
1912,4.8711987
1913,2.5309994
1914,2.8404999
1915,5.4001
1916,2.8402996
1917,1.9204999
1918,1.9710001
1919,3.5901995
1920,3.5704994
1921,2.4004993
1922,1.9199998
1923,1.241
1924,2.2806997
1925,2.0313
1926,2.3916
1927,2.5201998
1928,2.8908002
1929,4.921299
1930,2.25
1931,1.15
1932,6.1215024
1933,3.8121977
1934,2.8512
1935,4.642199
1936,3.6013994
1937,4.9214
1938,2.1326
1939,4.1018
1940,3.3823993
1941,3.4818993
1942,4.7313004
1943,2.0716999
1944,4.0308995
1945,3.3722997
1946,4.360699
1947,1.5316999
1948,3.2113998
1949,5.0223002
1950,3.0712
1951,3.1518989
1952,2.6814995
1953,3.0717998
1954,2.2313
1955,2.1620998
1956,1.0722001
1957,1.3713999
1958,1.6118001
1959,2.2414
1960,3.7917998
1961,3.2611997
1962,3.3618994
1963,1.4426
1964,1.3315
1965,3.011599
1966,3.2216
1967,1.7521001
1968,1.0314001
1969,3.5915983
1970,0.9421
1971,5.9613004
1972,2.5714998
1973,5.7011003
1974,3.3418982
1975,3.1416981
1976,3.5414987
1977,0.6414998
1978,1.5522
1979,2.0318003
1980,1.7016001
1981,0.88250005
1982,3.0513995
1983,6.891201
1984,1.6714
1985,2.9812994
1986,2.3517997
1987,1.5214002
1988,2.0110998
1989,2.191
1990,1.2819
1991,2.8115988
1992,4.411201
1993,3.4910994
1994,1.8619003
1995,1.3915
1996,2.8419986
1997,3.1824987
1998,3.9024975
1999,2.1023004
2000,2.7313998
2001,4.782199
2002,1.9714999
2003,1.2013
2004,3.971099
2005,3.162199
2006,2.0617
2007,6.0815
2008,4.811799
2009,3.1018991
2010,5.4438996
2011,2.8990002
2012,4.0309997
2013,3.4799998
2014,2.7119997
2015,3.2029994
2016,8.1818
2017,4.8313
2018,3.2617986
2019,5.860502
2020,3.3899996
2021,2.8699996
2022,2.09
2023,6.89
2024,3.2705994
2025,1.722