1901 - 121.4 1940 - 294.6 1979 - 205.7
1902 - 51.8 1941 - 158.1 1980 - 46.7
1903 - 119.1 1942 - 331.8 1981 - 39.9
1904 - 65.6 1943 - 34.3 1982 - 127.1
1905 - 39.2 1944 - 35.9 1983 - 23.9
1906 - 33.6 1945 - 86.3 1984 - 36.4
1907 - 118.4 1946 - 80.1 1985 - 193.6
1908 - 105.5 1947 - 342.8 1986 - 149.3
1909 - 131.9 1948 - 35.2 1987 - 151.5
1910 - 12.8 1949 - 53.6 1988 - 13.0
1911 - 38.0 1950 - 53.0 1989 - 1.9
1912 - 56.9 1951 - 62.1 1990 - 8.4
1913 - 17.9 1952 - 20.1 1991 - 77.3
1914 - 53.3 1953 - 69.5 1992 - 33.6
1915 - 16.6 1954 - 112.8 1993 - 41.2
1916 - 26.0 1955 - 85.2 1994 - 62.8
1917 - 162.1 1956 - 210.7 1995 - 21.8
1918 - 66.7 1957 - 18.9 1996 - 150.5
1919 - 73.4 1958 - 49.7 1997 - 131.6
1920 - 32.3 1959 - 52.1 1998 - 19.3
1921 - 34.8 1960 - 42.0 1999 - 47.7
1922 - 145.7 1961 - 24.9 2000 - 3.6
1923 - 25.3 1962 - 83.2 2001 - 27.7
1924 - 125.1 1963 - 337.2 2002 - 21.6
1925 - 32.2 1964 - 108.9 2003 - 80.1
1926 - 99.4 1965 - 59.6 2004 - 13.2
1927 - 19.3 1966 - 99.3 2005 - 23.6
1928 - 93.5 1967 - 30.0 2006 - 31.5
1929 - 227.1 1968 - 45.3 2007 - 4.8
1930 - 18.4 1969 - 85.5 2008 - 20.3
1931 - 55.3 1970 - 130.9 2009 - 56.5
1932 - 44.8 1971 - 100.5 2010 - 94.7
1933 - 87.6 1972 - 39.7 2011 - 80.6
1934 - 97.0 1973 - 23.8 2012 - 88.4
1935 - 22.9 1974 - 24.3 2013 - 73.0
1936 - 26.7 1975 - 3.2 2014 - 0.0
1937 - 35.8 1976 - 72.6 2015 - 7.8
1938 - 29.5 1977 - 19.1 2016 - 9.6
1939 - 106.0 1978 - 44.4 2017 - 36.0