1888 4.43939393939394
1889 4.62878787878788
1890 4.1969696969697
1891 4.26923076923077
1892 3.9
1893 3.9125
1894 3.82083333333333
1895 3.3625
1896 3.12916666666667
1897 3.01666666666667
1898 2.83660130718954
1899 2.79738562091503
1900 2.79411764705882
1901 2.74509803921569
1902 2.8921568627451
1903 3.06862745098039
1904 2.95424836601307
1905 3.26842105263158
1906 3.02105263157895
1907 3.09473684210526
1908 3.11842105263158
1909 3.14210526315789
1910 2.70526315789474
1911 2.78157894736842
1912 3.03421052631579
1913 2.90263157894737
1914 3.16052631578947
1919 2.88311688311688
1920 2.76190476190476
1921 2.69264069264069
1922 2.62987012987013
1923 2.47402597402597
1924 2.58008658008658
1925 3.68614718614719
1926 3.61038961038961
1927 3.82034632034632
1928 3.65367965367965
1929 3.80519480519481
1930 3.94588744588745
1931 3.73809523809524
1932 3.56060606060606
1933 3.2987012987013
1934 3.62987012987013
1935 3.36796536796537
1936 3.36580086580087
1937 3.0952380952381
1938 3.06926406926407
1939 2.51515151515152
1946 3.27489177489177
1947 2.90692640692641
1948 2.82034632034632
1949 2.6991341991342
1950 3.05844155844156
1951 3.22510822510823
1952 3.26406926406926
1953 3.51948051948052
1954 3.4025974025974
1955 3.30952380952381
1956 3.48917748917749
1957 3.72510822510823
1958 3.66233766233766
1959 3.5021645021645
1960 3.73160173160173
1961 3.42424242424242
1962 3.32467532467532
1963 3.4004329004329
1964 3.33982683982684
1965 3.15367965367965
1966 3.0021645021645
1967 3.02597402597403
1968 2.62554112554113
1969 2.62337662337662
1970 2.35714285714286
1971 2.51082251082251
1972 2.51082251082251
1973 2.3961038961039
1974 2.62554112554113
1975 2.66233766233766
1976 2.56060606060606
1977 2.66450216450216
1978 2.63419913419913
1979 2.50865800865801
1980 2.65800865800866
1981 2.53896103896104
1982 2.73593073593074
1983 2.70562770562771
1984 2.78787878787879
1985 2.78787878787879
1986 2.62987012987013
1987 2.49761904761905
1988 2.53157894736842
1989 2.59473684210526
1990 2.76052631578947
1991 2.54112554112554
1992 2.64502164502164
1993 2.58658008658009
1994 2.58658008658009
1995 2.6
1996 2.55263157894737
1997 2.68157894736842
1998 2.52368421052632
1999 2.78947368421053
2000 2.61052631578947
2001 2.63421052631579
2002 2.63157894736842
2003 2.66315789473684
2004 2.56578947368421
2005 2.48421052631579
2006 2.45
2007 2.63684210526316
2008 2.47894736842105
2009 2.77105263157895
2010 2.79736842105263
2011 2.80526315789474
2012 2.79736842105263
2013 2.76842105263158
2014 2.56578947368421