1878 6.6 8.1 8.5 13.0 15.7 19.8 21.4 20.1 17.5 13.5 5.9 2.7 12.76 1879 1.7 5.2 8.1 9.3 12.9 16.4 16.6 17.9 16.1 11.7 6.5 3.5 10.52 1880 3.1 8.6 10.3 11.3 15.1 17.8 19.2 20.2 18.3 10.4 8.6 7.5 12.54 1881 1.3 5.3 8.9 11.4 17.0 17.9 20.9 17.6 16.4 10.5 11.6 6.3 12.12 1882 7.4 8.6 11.4 12.3 16.5 17.1 19.3 18.9 16.3 12.9 8.5 6.3 12.99 1883 7.2 9.0 5.9 12.9 15.1 18.5 18.6 19.8 16.9 12.7 8.8 6.9 12.70 1884 8.7 8.0 10.0 11.4 16.4 19.1 20.5 22.6 18.5 13.0 8.2 6.6 13.61 1885 5.1 8.7 8.4 11.9 13.2 18.8 21.5 17.9 16.5 10.6 8.2 6.5 12.29 1886 4.5 3.7 7.2 11.6 14.5 18.1 20.5 20.2 17.5 14.1 9.0 4.6 12.17 1887 5.1 7.1 6.9 10.7 13.2 21.0 22.8 21.2 15.4 10.8 6.9 5.2 12.22 1888 5.7 4.1 5.8 9.7 15.5 17.4 17.1 18.0 16.1 12.1 9.8 7.4 11.58 1889 5.8 5.9 8.1 10.5 16.8 20.2 19.6 18.6 16.5 11.8 9.5 6.0 12.48 1890 8.7 5.8 9.8 11.3 16.5 17.7 18.4 18.0 18.9 13.2 8.8 1.2 12.39 1891 4.2 8.2 7.1 10.1 13.7 19.3 19.2 17.6 18.3 12.7 8.3 7.0 12.15 1892 4.9 6.2 6.3 12.9 16.2 18.1 18.1 19.3 15.9 10.5 9.2 4.6 11.86 1893 4.5 7.2 12.5 16.5 18.2 21.0 20.5 22.0 17.2 13.4 8.2 7.7 14.11 1894 5.9 8.0 11.2 14.2 13.1 17.6 19.9 17.3 15.0 12.1 10.3 7.5 12.70 1895 2.4 1.6 8.5 12.1 17.7 20.2 19.1 19.7 20.8 10.6 10.1 6.2 12.47 1896 7.0 7.6 10.0 13.0 17.3 21.0 21.1 18.3 16.0 10.1 7.1 6.2 12.91 1897 3.6 8.1 9.4 10.7 14.7 19.4 21.3 20.4 15.9 13.4 10.3 7.3 12.90 1898 8.7 7.6 7.8 12.7 13.8 17.9 20.1 20.9 20.2 14.0 9.7 9.7 13.62 1899 7.5 8.6 9.6 11.1 14.1 21.3 21.9 23.3 17.1 13.0 11.1 4.7 13.63 1900 6.7 5.3 6.7 12.8 14.4 18.9 22.7 19.1 18.1 13.2 9.7 9.6 13.14 1901 6.0 4.8 7.1 13.1 16.8 18.7 22.8 20.0 17.6 13.3 7.9 6.0 12.89 1902 7.1 4.2 10.2 11.9 12.8 18.0 19.0 18.2 16.8 12.3 9.1 6.6 12.23 1903 6.4 9.7 10.2 10.2 15.3 17.2 19.3 17.9 16.8 13.0 9.1 5.1 12.53 1904 6.5 5.6 7.4 12.2 14.7 17.8 21.8 19.5 16.7 13.1 8.3 6.2 12.51 1905 6.2 7.6 10.2 10.5 15.7 19.1 21.6 18.6 15.8 10.7 7.7 7.1 12.60 1906 7.8 5.9 8.5 12.5 14.1 19.1 20.6 21.4 18.8 13.9 9.9 5.5 13.21 1907 6.1 5.8 11.2 11.5 14.3 15.8 18.2 18.1 18.2 13.1 9.3 6.9 12.41 1908 5.2 8.2 7.5 9.6 16.5 19.2 20.2 18.7 16.4 15.3 10.3 6.2 12.79 1909 6.0 6.3 6.7 13.8 16.6 15.5 18.2 19.8 15.3 13.3 7.8 6.7 12.20 1910 6.3 7.9 10.1 10.9 15.7 18.9 17.8 18.7 16.3 13.2 6.4 8.6 12.60 1911 6.1 7.8 8.1 11.1 17.8 19.1 24.0 23.2 18.9 12.6 8.7 8.6 13.88 1912 6.0 8.2 10.0 13.9 16.4 17.7 19.8 16.0 14.6 12.6 9.0 9.5 12.82 1913 6.9 7.8 9.7 11.5 15.8 18.7 18.5 19.7 17.7 14.1 11.7 7.3 13.31 1914 6.1 9.9 9.3 15.0 15.2 19.4 19.9 20.6 18.2 13.7 9.9 7.1 13.70 1915 6.2 7.2 8.6 12.2 15.9 20.0 18.5 19.2 18.0 12.4 6.0 8.1 12.72 1916 10.3 6.5 5.9 12.6 16.3 15.7 19.8 20.8 16.7 13.6 9.6 4.6 12.72 1917 3.1 3.8 6.6 9.4 18.0 20.1 20.8 18.5 17.7 11.4 10.5 5.0 12.12 1918 6.7 9.0 9.6 10.3 18.1 18.3 20.0 20.4 15.1 12.4 8.8 9.3 13.20 1919 5.2 4.4 6.6 11.1 18.6 19.2 18.0 20.3 16.9 11.5 5.8 8.2 12.20 1920 8.0 9.3 11.0 11.0 15.9 18.8 17.4 17.3 17.1 13.8 9.8 6.4 12.99 1921 9.4 7.7 10.9 12.7 16.5 20.0 24.4 19.1 18.7 17.1 7.3 9.2 14.47 1922 6.3 7.3 7.4 9.5 17.9 18.5 17.4 17.2 15.8 11.7 9.1 8.0 12.20 1923 8.4 8.0 9.7 11.2 13.0 16.1 21.7 19.4 16.5 12.6 6.3 6.6 12.49 1924 7.1 5.8 8.4 11.0 15.5 17.7 19.5 17.7 16.2 13.0 9.5 8.9 12.55 1925 7.8 7.9 7.9 11.4 15.7 20.5 21.4 19.1 15.1 13.8 6.4 5.3 12.72 1926 7.2 9.1 9.4 13.4 14.2 18.1 21.0 20.4 18.1 11.4 8.6 6.5 13.13 1927 7.1 6.7 10.4 11.6 16.1 16.7 19.3 19.3 15.6 13.9 8.8 3.7 12.47 1928 8.3 8.9 9.4 12.5 15.4 17.1 20.8 19.2 17.3 13.4 10.3 6.1 13.24 1929 3.3 3.1 12.0 10.9 16.1 17.7 20.9 19.6 20.5 13.0 9.7 8.2 12.98 1930 8.2 4.6 8.7 11.5 14.7 20.1 18.8 19.8 16.9 13.6 9.3 6.8 12.80 1931 6.0 6.6 8.2 10.9 15.5 18.2 18.7 18.1 14.9 12.8 10.6 7.7 12.38 1932 9.2 5.6 8.6 10.3 14.0 18.9 19.7 21.3 16.7 12.4 9.1 8.0 12.85 1933 4.9 7.4 11.9 13.1 16.5 20.6 22.6 22.6 19.5 13.3 8.0 3.7 13.71 1934 7.2 7.2 8.4 11.8 15.9 19.7 23.7 19.9 19.0 13.6 8.6 10.1 13.80 1935 6.7 8.5 10.1 11.8 14.6 19.2 22.0 21.8 17.3 12.8 9.7 5.2 13.33 1936 6.2 5.5 10.3 9.9 16.2 19.0 18.6 20.4 17.7 13.0 8.6 8.1 12.82 1937 7.8 8.2 6.6 12.6 16.5 18.4 19.9 21.8 17.7 13.8 8.0 5.4 13.09 1938 8.3 7.8 13.8 12.4 15.0 18.5 19.3 20.4 17.9 13.8 12.2 6.9 13.89 1939 6.6 8.7 8.8 12.9 16.0 19.0 19.1 20.6 18.0 11.8 11.4 5.6 13.22 1940 1.7 5.1 9.9 12.8 17.8 21.9 19.2 20.2 17.6 13.0 9.8 6.4 12.96 1941 2.5 6.3 8.8 9.9 13.8 19.8 22.1 18.4 18.4 13.8 9.4 8.2 12.65 1942 3.5 2.9 8.7 13.7 15.7 19.6 19.6 20.4 17.5 13.7 8.0 9.0 12.75 1943 7.5 9.1 10.8 14.8 16.7 18.7 21.4 20.0 17.4 14.3 9.2 6.0 13.85 1944 8.7 6.1 9.2 14.5 16.6 17.5 20.1 21.6 16.5 12.2 9.1 6.1 13.21 1945 3.0 10.2 12.1 14.8 16.8 18.7 20.8 20.0 17.7 15.5 9.6 7.5 13.91 1946 5.5 8.4 9.0 14.8 15.4 17.1 20.8 18.5 17.3 12.6 10.6 6.1 13.02 1947 4.7 0.1 6.6 12.5 18.4 19.9 20.9 24.4 19.2 14.7 10.1 7.4 13.33 1948 8.1 7.3 13.0 13.6 16.8 17.4 20.0 18.7 17.4 13.7 10.2 8.4 13.74 1949 8.3 9.5 8.7 14.1 16.1 20.7 22.7 21.7 20.4 15.1 9.5 8.5 14.63 1950 6.5 8.7 11.3 11.4 15.6 20.9 19.8 19.6 16.1 12.8 8.4 3.4 12.89 1951 6.3 6.3 7.2 10.8 14.1 18.8 20.8 18.5 17.6 13.1 11.3 8.4 12.80 1952 5.5 6.6 9.6 14.1 18.0 18.9 21.1 19.7 14.4 12.0 6.8 5.6 12.72 1953 5.7 7.2 10.3 11.5 17.2 18.5 19.4 20.7 17.7 13.6 11.2 9.2 13.56 1954 5.5 5.4 9.1 12.3 15.3 16.9 17.6 18.3 16.6 14.9 10.1 9.4 12.66 1955 5.2 3.8 6.9 13.6 13.6 17.9 23.2 23.2 18.5 13.3 9.9 8.5 13.19 1956 6.4 3.0 10.2 11.5 16.8 17.1 19.6 17.2 17.8 12.9 8.9 8.0 12.49 1957 8.3 8.4 12.8 13.1 14.8 21.1 20.1 19.3 15.9 14.4 8.8 7.4 13.73 1958 6.2 7.8 6.8 11.5 15.3 18.3 20.0 19.6 18.6 13.7 9.1 7.1 12.86 1959 4.4 7.4 10.9 13.4 18.0 20.1 22.3 22.0 20.5 17.0 10.2 8.8 14.63 1960 6.4 7.1 9.4 13.2 17.5 21.2 19.1 19.2 17.0 13.3 10.3 6.4 13.35 1961 6.6 9.8 12.7 13.8 15.4 19.4 19.4 19.6 19.5 14.5 9.0 5.0 13.74 1962 7.3 7.2 6.7 11.5 14.0 18.5 19.0 18.2 16.2 14.2 8.3 4.8 12.18 1963 0.6 2.0 9.5 12.5 14.8 19.4 19.7 18.1 16.9 14.3 11.1 5.3 12.07 1964 6.0 7.2 7.0 12.4 17.9 17.6 20.3 20.1 19.1 12.9 10.4 6.8 13.16 1965 5.8 5.5 9.4 12.1 15.8 18.9 17.5 19.2 16.0 14.9 7.3 7.6 12.55 1966 5.1 8.1 9.9 10.4 15.4 19.8 18.7 18.9 17.8 13.4 8.3 8.3 12.87 1967 6.8 8.4 10.1 11.2 14.3 18.6 21.1 19.7 17.1 13.6 8.3 6.8 13.03 1968 7.0 4.5 9.8 12.6 13.8 19.2 18.9 19.2 17.3 15.2 8.8 5.1 12.64 1969 8.0 3.5 6.3 11.8 15.1 18.8 21.5 20.2 17.4 16.5 8.4 5.8 12.84 1970 6.4 5.8 7.0 10.2 17.7 21.7 19.1 20.4 18.4 14.3 10.6 6.7 13.23 1971 7.0 7.4 8.0 11.8 16.4 16.0 21.8 19.3 18.9 15.3 9.4 8.9 13.39 1972 6.2 6.9 10.6 11.5 14.3 15.5 19.9 19.3 15.8 14.2 9.3 8.6 12.70 1973 6.8 7.2 10.5 10.8 15.5 19.6 19.7 21.2 18.4 12.6 9.2 7.8 13.31 1974 8.7 8.3 9.2 12.8 15.6 18.5 18.9 19.6 15.8 10.5 9.6 10.5 13.20 1975 9.5 7.6 7.7 12.0 14.1 20.2 22.2 24.0 17.7 13.6 9.6 7.8 13.87 1976 8.2 7.1 8.3 12.2 16.5 22.6 24.3 23.5 17.2 13.6 9.2 4.5 13.96 1977 5.2 8.0 10.1 10.8 15.3 16.2 20.3 19.2 16.7 15.0 9.3 8.4 12.91 1978 5.9 5.4 10.2 10.0 16.3 17.8 18.7 18.8 18.0 15.5 11.5 6.5 12.93 1979 2.8 3.6 7.6 11.3 14.0 18.0 20.5 19.0 17.7 15.0 10.0 8.3 12.37 1980 5.0 8.8 7.8 13.1 16.3 17.7 18.6 19.9 18.4 12.4 9.1 8.5 12.97 1981 7.6 6.0 10.6 11.6 15.3 16.8 19.5 20.9 18.8 11.9 10.8 3.3 12.79 1982 5.6 7.7 9.8 12.9 16.7 19.7 21.0 19.6 18.6 13.2 10.5 7.3 13.58 1983 9.3 4.3 9.5 10.6 14.1 18.6 25.0 22.5 17.0 13.9 10.2 8.4 13.69 1984 6.6 6.2 7.6 13.3 14.6 19.0 22.6 22.8 17.0 14.4 10.5 8.0 13.57 1985 3.7 5.1 8.3 12.0 14.9 16.8 20.3 18.1 18.7 14.3 7.0 8.7 12.37 1986 6.1 1.2 8.6 9.3 15.0 19.5 19.8 17.4 16.0 14.6 10.9 9.1 12.36 1987 3.2 6.8 7.1 14.6 14.4 16.5 19.9 19.6 17.5 13.2 8.9 7.9 12.49 1988 7.8 7.7 9.4 12.2 16.6 18.6 18.1 19.5 16.9 13.7 9.0 9.8 13.30 1989 9.0 9.2 11.2 10.3 18.4 19.9 23.4 21.5 18.7 15.0 9.5 7.4 14.50 1990 9.3 10.2 12.0 12.9 18.3 17.6 22.6 23.0 17.4 15.0 9.5 6.9 14.60 1991 6.1 4.9 11.3 11.9 14.7 16.0 21.6 22.0 19.7 13.2 9.7 7.4 13.26 1992 6.1 8.7 10.6 12.5 19.0 20.8 20.1 19.2 16.9 10.9 10.5 6.3 13.47 1993 9.0 6.9 10.3 13.1 15.7 19.5 19.0 19.0 16.1 11.8 7.3 8.1 13.02 1994 8.0 6.1 10.7 11.9 14.5 18.8 23.2 20.1 16.1 13.8 12.5 9.4 13.81 1995 7.8 9.3 9.4 13.3 16.4 18.7 23.7 25.1 17.5 16.5 10.8 4.5 14.45 1996 6.0 5.5 7.4 12.8 13.4 19.7 21.4 21.1 17.7 15.0 9.1 5.4 12.89 1997 5.1 9.6 12.1 13.5 16.5 18.0 21.3 23.7 18.3 14.3 11.4 8.5 14.39 1998 7.9 10.7 11.2 11.4 17.9 17.9 19.4 20.7 18.6 13.7 9.1 8.7 13.96 1999 8.5 8.1 10.8 13.6 17.2 18.3 23.0 20.5 19.9 14.4 10.6 7.8 14.43 2000 7.8 9.5 11.0 11.7 16.5 19.4 19.7 21.3 18.5 13.5 9.9 7.9 13.90 2001 6.0 7.8 8.5 11.5 17.5 18.8 21.8 21.1 16.8 16.4 10.9 6.6 13.68 2002 8.6 10.1 11.5 14.2 15.9 18.7 20.4 21.1 18.8 13.8 11.3 7.7 14.36 2003 7.2 7.5 12.5 14.7 16.5 21.1 22.2 23.5 19.9 13.4 11.2 7.9 14.84 2004 8.0 8.1 10.2 13.4 16.6 19.8 20.2 21.8 18.8 13.6 10.1 8.2 14.08 2005 8.7 6.9 10.5 13.0 15.9 20.2 21.1 21.2 19.6 16.1 9.7 7.5 14.24 2006 6.6 6.3 8.2 12.5 16.5 21.0 25.6 19.9 20.9 16.3 11.5 8.8 14.55 2007 9.7 8.7 11.2 16.4 16.0 19.3 19.0 19.7 17.8 14.4 10.5 7.7 14.23 2008 9.4 9.6 9.4 12.1 17.9 18.2 20.5 19.5 17.2 13.4 9.6 6.3 13.61 2009 6.0 6.7 11.0 14.6 16.6 19.7 20.2 20.8 18.2 14.9 11.3 5.8 13.85 2010 3.7 5.4 10.1 13.9 15.4 20.5 21.3 19.3 17.6 13.8 7.9 2.4 12.64 2011 6.2 9.0 10.9 17.1 16.6 18.5 19.9 19.4 19.1 16.3 12.5 8.7 14.54 2012 8.4 6.9 12.8 11.2 16.3 17.4 19.6 20.7 17.3 12.8 9.8 7.6 13.43 2013 5.6 5.9 5.7 11.9 14.8 18.1 24.0 21.4 17.5 15.4 9.2 9.4 13.29 2014 8.4 8.9 11.9 14.4 16.3 19.9 23.0 19.1 19.6 15.7 11.3 8.1 14.75 2015 7.4 6.9 10.1 14.2 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.99