1878 2.6 3.1 2.3 4.8 7.8 10.4 11.8 12.3 9.1 6.9 1.1 -2.6 5.82 1879 -3.1 1.0 1.3 2.1 4.9 9.4 10.6 11.1 9.1 6.1 1.8 -2.1 4.36 1880 -1.3 3.0 2.1 4.5 5.7 9.8 11.8 12.5 10.8 3.8 2.2 2.7 5.63 1881 -4.3 1.1 1.7 3.2 6.6 9.5 11.5 10.2 9.0 4.1 6.1 1.5 5.03 1882 3.0 3.6 3.4 4.5 6.4 9.1 11.1 10.8 7.9 6.9 2.9 1.5 5.94 1883 2.2 2.8 -2.0 3.3 6.1 9.3 10.5 10.8 9.7 6.6 2.8 2.3 5.38 1884 4.2 2.6 3.0 3.1 6.2 9.1 12.1 11.8 10.5 5.8 2.4 2.2 6.10 1885 0.7 2.9 0.6 3.5 4.7 9.0 11.1 9.3 7.9 4.4 3.6 1.0 4.90 1886 -0.3 -0.6 1.2 3.6 6.1 9.1 11.4 11.4 9.7 8.5 4.2 -0.8 5.33 1887 -0.2 0.6 -0.3 1.6 5.6 9.6 11.8 10.2 8.2 3.4 1.9 -0.0 4.39 1888 0.7 -0.5 0.4 2.8 5.9 9.0 10.3 10.2 8.3 3.7 5.6 2.5 4.92 1889 1.0 -0.1 1.3 3.7 8.9 10.4 11.0 10.8 9.1 5.4 4.3 0.6 5.56 1890 2.7 0.4 2.6 3.0 6.9 9.3 10.6 10.2 10.3 5.6 2.6 -2.7 5.15 1891 -1.6 -0.3 0.5 2.3 5.3 10.1 11.0 10.6 10.1 6.1 2.9 1.2 4.88 1892 -0.3 1.0 -0.9 1.7 6.9 8.7 10.5 11.1 8.9 3.8 3.6 -0.9 4.51 1893 -0.0 2.1 1.9 4.0 8.0 10.2 12.3 12.8 8.6 6.4 2.2 1.9 5.89 1894 0.9 2.2 2.2 5.2 5.3 9.4 11.9 11.1 8.2 6.5 5.5 2.7 5.94 1895 -2.0 -5.1 1.7 4.3 7.1 9.3 11.3 11.9 10.0 3.6 4.9 1.7 4.95 1896 2.6 1.6 3.4 5.2 6.5 11.4 11.3 10.3 10.2 3.7 1.5 1.6 5.78 1897 -0.3 3.5 3.6 3.6 5.3 10.8 11.7 12.0 8.3 6.3 4.9 2.1 5.99 1898 4.5 2.0 0.8 4.3 6.6 9.3 10.5 12.1 10.2 8.6 4.7 4.9 6.57 1899 2.3 1.7 0.6 4.5 5.7 10.1 12.7 12.3 9.3 4.6 5.9 -0.3 5.80 1900 2.1 -0.1 0.7 3.8 6.2 10.5 12.7 11.1 9.1 6.4 5.0 4.8 6.06 1901 1.0 -0.1 1.1 4.0 6.2 9.1 13.2 11.2 10.2 6.1 1.7 0.8 5.41 1902 2.4 -1.1 3.2 3.1 5.0 9.8 10.3 10.4 8.8 6.9 4.4 2.6 5.53 1903 2.0 4.5 4.0 2.6 6.9 8.8 11.4 10.7 9.4 7.9 3.7 1.5 6.13 1904 1.7 1.2 1.2 5.2 7.1 8.8 12.5 10.7 8.3 6.3 2.1 1.2 5.54 1905 1.0 2.8 3.4 4.1 5.9 10.4 12.8 10.7 9.0 3.5 2.1 2.7 5.72 1906 2.8 0.3 1.7 2.1 6.9 9.6 11.0 12.0 8.9 7.9 4.6 0.6 5.74 1907 1.2 -0.2 1.4 3.7 6.7 9.0 10.0 10.5 9.0 6.5 3.7 2.4 5.36 1908 -0.2 2.4 1.1 2.4 8.3 9.4 11.4 10.5 9.4 8.3 4.5 1.6 5.77 1909 1.0 -0.4 0.7 3.6 5.4 8.1 11.0 10.9 8.5 7.5 1.7 1.1 4.96 1910 0.7 2.3 2.1 3.8 6.7 10.5 10.6 11.6 8.7 7.9 0.0 4.2 5.79 1911 1.5 1.9 2.3 3.9 8.0 9.9 12.4 13.2 9.0 5.9 3.5 3.8 6.31 1912 1.2 2.6 4.4 3.7 7.8 10.1 12.4 9.8 7.6 3.8 3.6 3.9 5.92 1913 2.1 1.8 2.7 4.7 7.0 9.9 10.7 10.7 10.5 7.8 5.1 2.9 6.35 1914 1.3 3.7 2.9 4.6 6.4 9.6 11.7 11.6 8.4 6.9 3.7 2.2 6.10 1915 2.0 1.4 1.8 3.6 5.7 8.8 10.7 11.3 8.8 5.8 -0.4 2.5 5.20 1916 4.7 1.2 0.7 3.8 6.9 7.9 10.8 12.0 9.3 7.5 4.0 -0.8 5.68 1917 0.1 -2.0 -0.2 1.4 7.6 10.2 11.4 12.1 10.3 3.6 5.1 -0.3 4.98 1918 0.9 4.0 1.8 3.1 7.9 8.2 10.9 11.8 8.7 6.2 2.2 4.5 5.87 1919 0.6 -0.6 0.6 3.1 8.4 9.4 9.8 11.1 8.5 3.2 0.8 2.8 4.85 1920 2.4 2.7 3.4 5.4 7.7 10.0 10.8 9.9 8.9 7.0 3.8 2.0 6.18 1921 5.2 2.0 3.9 3.3 6.5 9.4 12.6 11.6 9.5 8.5 2.0 3.9 6.58 1922 1.1 1.5 1.8 1.5 7.5 9.0 10.1 10.0 8.6 4.7 2.7 3.6 5.20 1923 2.8 3.2 3.3 4.0 5.4 8.8 13.3 11.0 8.5 6.8 0.3 1.1 5.73 1924 2.4 0.8 -0.2 2.8 7.7 10.0 11.1 10.5 10.4 7.2 4.7 4.7 6.03 1925 2.8 2.5 1.9 3.6 7.5 9.5 12.2 11.7 7.9 7.0 0.8 0.2 5.66 1926 2.0 4.5 3.2 5.2 6.2 9.1 13.2 12.0 10.7 4.8 3.2 1.9 6.34 1927 2.1 1.1 4.2 4.2 6.4 8.5 12.5 12.1 9.4 7.1 3.6 0.5 6.01 1928 2.1 2.7 3.2 4.5 6.4 8.7 11.4 11.4 8.3 6.8 4.9 0.8 5.94 1929 -0.6 -2.2 0.4 2.7 6.4 8.9 11.1 11.2 10.1 6.2 3.7 3.5 5.16 1930 3.0 0.4 1.9 5.1 6.7 10.5 11.5 11.6 10.3 7.5 3.1 1.8 6.15 1931 0.5 1.3 0.2 4.6 7.3 10.6 11.9 10.7 8.1 4.8 5.0 2.9 5.68 1932 3.5 0.2 0.8 3.5 7.0 9.3 12.5 12.9 9.0 5.2 4.2 3.4 5.98 1933 -0.5 1.2 2.7 4.5 7.9 10.6 13.0 12.6 10.3 6.9 3.2 -0.5 6.02 1934 1.0 0.4 1.2 4.2 6.7 10.1 12.7 10.9 10.1 7.6 3.6 6.1 6.26 1935 2.3 3.1 3.1 4.5 5.2 11.0 12.2 11.5 9.9 6.2 4.1 0.4 6.14 1936 1.2 -0.3 3.9 2.7 6.8 10.4 12.0 11.7 11.1 5.8 2.5 2.5 5.88 1937 2.7 3.0 0.6 5.8 7.9 9.8 12.3 12.0 9.1 7.0 2.2 0.6 6.10 1938 3.1 2.4 4.4 2.8 6.4 10.3 11.1 12.2 9.7 7.2 6.6 1.9 6.53 1939 1.8 2.5 2.8 4.6 6.9 9.4 11.9 12.2 10.4 4.6 6.0 0.8 6.17 1940 -4.5 0.1 2.1 4.6 7.3 10.9 11.0 11.0 8.1 6.2 4.0 1.2 5.18 1941 -1.4 0.6 1.4 2.9 5.0 10.4 12.5 11.0 10.6 7.0 3.8 3.0 5.59 1942 -1.6 -2.7 1.8 4.7 6.5 9.2 11.4 12.8 9.7 7.1 1.9 4.4 5.49 1943 2.3 3.2 2.2 6.2 6.9 10.1 11.4 12.2 9.2 6.9 3.4 1.0 6.26 1944 2.9 1.1 1.2 5.9 6.3 9.5 12.9 12.4 8.5 6.4 3.3 1.1 5.98 1945 -2.2 4.0 3.7 5.4 7.6 10.5 12.6 11.8 11.1 8.4 4.8 2.3 6.67 1946 -0.1 3.4 1.3 5.0 6.0 9.1 11.8 10.8 10.7 7.0 5.5 0.1 5.89 1947 -0.2 -3.8 0.6 4.7 8.6 11.1 13.1 12.7 10.6 6.5 4.3 2.8 5.98 1948 2.7 2.1 3.6 4.4 6.1 9.6 11.6 11.5 10.2 6.6 4.3 3.0 6.32 1949 2.7 1.9 1.5 5.8 6.3 9.9 12.1 11.9 12.2 8.3 3.7 3.1 6.64 1950 1.9 2.0 3.5 3.8 7.0 11.5 12.0 11.6 9.7 6.4 3.0 -1.0 5.97 1951 1.5 1.1 1.0 2.8 6.2 9.2 11.8 11.1 10.6 5.7 5.7 2.6 5.80 1952 -0.1 0.2 3.6 5.0 8.9 9.9 12.6 11.9 7.0 5.6 1.6 0.0 5.54 1953 0.9 1.4 0.9 3.2 8.0 10.3 11.6 11.7 9.9 5.8 5.8 4.7 6.21 1954 0.3 -0.2 2.5 2.9 7.1 9.9 10.8 11.0 8.8 8.9 3.7 4.2 5.87 1955 0.1 -1.4 -0.5 5.0 5.8 9.7 12.2 13.0 9.9 5.1 4.1 2.3 5.48 1956 0.9 -3.3 2.2 2.4 6.6 9.1 12.0 9.8 10.8 5.9 3.1 3.4 5.28 1957 2.7 2.2 5.6 4.7 5.8 9.3 12.5 11.5 9.2 7.2 4.0 1.6 6.39 1958 0.6 1.6 0.6 3.3 6.9 9.9 11.8 11.9 11.5 7.9 3.7 2.3 6.02 1959 -1.2 1.4 3.7 5.4 7.6 10.3 12.3 12.4 9.3 8.2 4.0 3.1 6.41 1960 1.2 1.1 3.4 4.6 8.0 11.0 11.1 10.8 9.2 7.3 4.3 1.4 6.13 1961 1.2 4.0 3.7 6.2 6.5 9.4 11.0 11.2 10.9 7.3 3.0 -0.6 6.15 1962 1.3 1.6 -1.1 3.9 6.6 8.9 11.2 10.8 9.0 6.6 2.7 -1.1 5.05 1963 -4.8 -3.4 2.5 4.9 6.4 10.4 10.7 10.5 8.9 8.0 5.3 -0.1 4.98 1964 0.8 1.8 1.6 5.0 8.7 10.0 11.9 10.9 9.1 4.9 4.4 0.5 5.81 1965 0.8 0.7 1.0 3.9 7.6 10.5 10.5 10.6 8.6 7.1 1.7 1.8 5.43 1966 0.7 3.3 3.1 4.0 6.6 11.0 11.3 10.5 9.8 6.8 2.9 2.6 6.06 1967 2.2 2.4 3.9 4.2 6.5 9.4 12.3 11.7 9.9 8.0 2.5 1.6 6.24 1968 1.8 -0.7 2.8 3.6 5.8 10.4 11.0 11.6 10.5 9.8 4.2 0.9 6.00 1969 3.1 -1.5 0.4 3.0 7.3 9.0 12.1 12.6 10.4 9.5 2.4 0.8 5.81 1970 1.0 -0.0 0.4 3.2 8.3 11.1 11.4 11.6 10.4 7.1 5.0 2.0 5.99 1971 2.0 1.5 1.8 4.0 6.8 8.8 12.0 11.8 9.1 7.3 2.6 4.3 6.04 1972 1.6 1.7 2.4 4.9 6.7 8.1 11.2 10.9 7.6 7.0 3.3 3.0 5.72 1973 2.2 1.4 1.9 3.2 7.2 10.0 11.4 11.8 10.2 5.4 2.8 2.0 5.82 1974 3.1 2.6 2.3 3.6 6.4 9.3 11.5 10.8 8.5 5.1 4.1 5.7 6.11 1975 4.1 1.2 2.0 4.7 5.6 9.2 12.7 13.3 9.3 6.1 2.9 2.8 6.20 1976 3.6 1.9 1.3 4.0 7.6 11.4 13.0 11.8 9.5 7.6 3.3 -0.4 6.23 1977 0.4 2.4 3.7 3.7 5.9 8.2 11.5 11.2 9.9 8.5 3.9 3.8 6.12 1978 0.8 0.2 3.2 3.0 7.0 9.6 11.0 11.3 10.5 8.3 5.5 1.4 6.02 1979 -3.5 -1.2 1.8 4.2 5.9 9.8 11.8 10.8 9.3 7.7 3.5 3.4 5.33 1980 -0.3 2.7 1.7 4.6 6.1 9.8 10.7 11.9 11.1 5.7 4.2 2.7 5.91 1981 2.2 -0.0 5.2 3.9 7.1 9.6 11.5 11.5 10.2 5.2 4.9 -2.7 5.75 1982 -0.3 1.9 2.4 4.2 6.5 11.4 12.0 11.7 9.7 6.9 5.4 1.5 6.13 1983 4.0 -1.0 3.2 2.9 6.6 10.2 14.0 12.1 10.4 7.0 4.9 2.8 6.48 1984 1.1 0.5 1.8 2.9 5.2 9.9 11.2 12.5 10.3 7.8 5.4 2.5 5.94 1985 -1.9 -1.0 1.0 4.6 6.9 8.5 12.0 11.1 10.6 7.6 1.1 3.9 5.41 1986 0.9 -3.4 1.3 2.2 7.1 10.0 11.9 10.0 6.6 7.4 4.6 3.4 5.23 1987 -1.5 0.3 1.0 6.0 5.8 9.1 12.0 11.6 9.6 6.2 4.2 3.3 5.66 1988 2.7 2.0 3.4 4.2 7.2 10.1 11.3 11.0 9.6 7.1 1.4 5.2 6.29 1989 3.3 2.6 3.7 2.9 7.6 9.2 13.1 11.6 10.6 8.4 2.9 2.4 6.56 1990 3.7 4.3 4.5 3.1 7.0 9.7 11.2 13.0 9.1 8.7 4.3 1.8 6.72 1991 0.5 -1.8 4.4 4.0 6.8 8.1 12.9 12.2 9.7 7.2 3.9 1.9 5.87 1992 1.2 2.1 4.4 4.9 8.2 10.6 12.2 11.4 9.8 4.7 4.3 0.8 6.23 1993 2.9 2.4 3.0 5.8 7.0 10.5 11.3 10.1 8.7 5.1 1.8 2.9 5.98 1994 2.6 0.4 4.6 4.3 6.8 10.1 12.8 11.8 9.4 6.6 7.7 3.4 6.75 1995 1.8 3.6 1.7 4.9 6.7 9.7 13.3 13.3 9.9 9.3 4.7 0.1 6.60 1996 2.7 -0.6 1.7 4.2 4.8 9.1 11.5 11.9 9.5 8.3 2.8 0.5 5.56 1997 -0.1 3.7 4.7 4.4 6.3 10.0 11.9 14.0 10.2 6.2 5.5 3.1 6.67 1998 2.4 3.8 4.6 4.1 8.2 10.5 11.7 11.2 11.2 7.6 3.2 2.4 6.76 1999 2.6 2.5 3.9 5.3 8.7 9.5 12.4 11.8 11.3 7.0 5.1 2.1 6.88 2000 1.9 3.0 4.3 3.8 7.6 10.8 11.2 12.0 11.0 7.1 4.1 3.7 6.72 2001 0.4 0.9 1.9 3.9 7.6 9.9 12.6 12.4 10.0 10.2 4.2 0.5 6.24 2002 2.4 3.9 3.6 4.5 7.8 10.2 11.6 12.8 9.9 6.4 5.8 3.8 6.91 2003 1.8 0.3 2.6 4.5 7.7 11.1 13.0 13.1 8.7 5.1 5.1 1.7 6.26 2004 2.5 2.6 2.8 5.3 7.5 10.9 11.4 13.4 11.0 7.4 5.3 2.6 6.90 2005 3.4 1.7 3.9 4.8 6.9 10.7 12.7 11.2 10.8 10.1 2.7 1.4 6.73 2006 2.1 1.1 1.6 4.6 8.1 10.7 13.9 12.2 12.8 9.8 4.7 4.2 7.19 2007 4.3 2.8 3.3 5.9 7.8 10.9 11.5 11.1 9.9 7.3 4.1 2.2 6.78 2008 3.8 1.2 2.7 3.8 8.8 9.7 12.0 12.9 9.9 5.9 4.5 0.8 6.35 2009 0.1 1.5 3.0 5.3 7.6 9.9 12.1 12.4 10.3 8.2 6.0 0.4 6.42 2010 -0.9 0.1 2.2 3.8 5.9 10.0 12.8 11.2 9.9 6.9 2.5 -3.8 5.07 2011 1.2 3.7 2.5 6.5 7.7 9.0 10.5 11.3 11.1 9.0 6.7 3.3 6.89 2012 2.5 0.7 3.7 3.2 7.1 9.7 11.5 12.5 8.7 6.5 3.9 1.9 6.02 2013 1.3 0.5 -0.3 3.1 6.0 9.1 12.7 12.4 9.8 9.6 3.1 3.3 5.92 2014 3.0 3.4 3.3 6.1 8.2 10.4 12.4 10.8 10.6 9.3 5.9 2.2 7.15 2015 1.4 1.1 2.7 3.8 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.99