DJF MAM JJA SON 1905 816.934 806.982 805.201 808.926 1906 813.099 809.806 802.868 798.687 1907 815.32 805.353 804.72 800.924 1908 815.635 805.055 801.113 801.86 1909 818.188 806.387 798.824 801.979 1910 814.385 805.295 804.976 798.369 1911 821.956 803.353 800.572 803.28 1912 817.116 807.43 804.016 801.128 1913 818.353 808.82 806.606 800.723 1914 814.985 803.676 804.158 803.564 1915 814.158 809.653 804.781 802.616 1916 813.203 807.124 798.803 800.796 1917 813.017 801.516 798.676 798.32 1918 816.222 808.276 804.312 801.163 1919 815.875 806.996 799.461 800.135 1920 815.841 807.423 801.887 803.852 1921 815.48 804.325 804.053 800.535 1922 818.57 806.025 799 802.18 1923 813.533 805.852 807.306 800.03 1924 815.703 805.349 799.795 798.235 1925 824.285 806.333 798.878 803.448 1926 815.582 808.081 802.206 805.423 1927 811.589 807.296 803.875 804.541 1928 817.347 803.728 802.335 802.855 1929 815.836 806.796 803.769 801.885 1930 817.76 804.3 806.055 805.174 1931 816.409 807.011 797.73 801.893 1932 817.666 806.282 802.904 799.119 1933 814.867 806.917 798.926 800.645 1934 813.518 806.942 802.587 797.814 1935 816.12 806.352 805.084 800.031 1936 817.596 806.148 800.699 803.617 1937 813.533 804.656 802.731 799.689 1938 817.908 807.782 798.354 800.81 1939 818.421 806.541 808.101 799.767 1940 814.281 808.057 800.519 801.292 1941 817.561 808.337 801.427 802.04 1942 816.144 806.247 800.457 804.703 1943 811.572 804.316 795.752 800.715 1944 817.204 803.229 797.646 805.626 1945 818.756 807.708 801.995 800.477 1946 817.427 806.94 803.292 806.586 1947 814.497 807.37 802.071 799.582 1948 816.751 807.331 803.104 803.941 1949 818.947 810.658 804.053 798.911 1950 813.169 812.131 804.651 797.756 1951 817.151 806.182 800.399 806.924 1952 810.715 811.385 801.268 801.023 1953 814.653 810.886 798.151 805.786 1954 815.816 808.43 803.003 801.459 1955 815.311 811.134 801.963 801.67 1956 814.374 810.496 803.45 802.925 1957 818.023 806.341 807.499 805.366 1958 810.406 812.167 804.044 799.805 1959 814.631 809.614 805.989 800.669 1960 816.651 804.484 801.569 800.593 1961 811.597 810.43 805.109 800.307 1962 811.373 806.525 801.026 803.568 1963 817.333 807.354 807.309 801.817 1964 820.406 807.219 809.326 802.895 1965 816.353 807.435 803.923 802.353 1966 817.659 809.319 801.214 800.415 1967 817.104 811.745 803.04 801.823 1968 817.006 806.054 799.411 804.852 1969 814.163 810.895 804.956 800.528 1970 815.323 810.229 800.492 803.536 1971 817.94 807.224 802.019 806.177 1972 816.138 811.496 808.013 805.429 1973 811.153 808.224 803.572 803.064 1974 815.464 807.261 807.912 800.222 1975 816.289 810.582 807.494 804.297 1976 816.675 806.776 804.625 802.58 1977 813.891 807.125 806.916 804.218 1978 816.071 808.25 801.412 802.062 1979 820.896 806.877 803.566 801.76 1980 815.631 814.188 810.764 807.933 1981 815.766 810.15 804.065 803.987 1982 820.677 806.92 806.805 805.102 1983 816.035 811.379 804.015 802.302 1984 816.702 807.892 803.49 804.94 1985 813.577 812.46 802.333 803.024 1986 816.737 810.781 802.89 802.751 1987 815.449 810.073 806.458 802.602 1988 815.156 807.903 806.057 805.756 1989 816.417 807.408 799.12 799.853 1990 816.243 809.928 803.253 804.03 1991 818.321 807.591 807.06 806.738 1992 819.723 814.841 807.735 803.199 1993 814.014 810.003 804.293 802.621 1994 813.865 809.184 806.724 810.771 1995 813.073 806.769 810.412 802.891 1996 815.155 807.444 810.17 804.562 1997 816.957 806.412 803.868 807.938 1998 810.54 807.312 801.495 802.898 1999 811.475 803.866 806.849 801.435 2000 819.534 807.534 807.202 806.394 2001 812.197 809.119 803.011 799.798 2002 816.33 813.801 807.754 810.848 2003 817.536 808.013 800.395 804.831 2004 815.664 803.919 802.737 806.507 2005 815.729 806.844 803.125 805.297 2006 814.992 803.617 808.14 806.091 2007 811.274 811.407 812.425 804.909 2008 811.516 808.568 802.515 803.561 2009 817.259 809.389 808.207 803.768 2010 814.646 805.666 797.359 803.496 2011 810.62 805.343 808.376 806.104 2012 815.684 807.818 804.029 804.118 2013 813.067 806.797 804.147 803.339