1791 0.075 1792 0.077 1793 0.080 1794 0.078 1795 0.081 1796 0.084 1797 0.082 1798 0.079 1799 0.078 1800 0.083 1801 0.083 1802 0.081 1803 0.077 1804 0.086 1805 0.082 1806 0.076 1807 0.069 1808 0.065 1809 0.057 1810 0.053 1811 0.048 1812 0.045 1813 0.056 1814 0.081 1815 0.100 1816 0.127 1817 0.123 1818 0.103 1819 0.096 1820 0.091 1821 0.090 1822 0.094 1823 0.091 1824 0.090 1825 0.084 1826 0.081 1827 0.074 1828 0.067 1829 0.058 1830 0.049 1831 0.039 1832 0.024 1833 0.007 1834 0.005 1835 0.000 1836 0.000 1837 0.000 1838 0.003 1839 0.010 1840 0.004 1841 0.005 1842 0.014 1843 0.033 1843 0.020 1844 0.023 1845 0.016 1846 0.016 1847 0.039 1848 0.047 1849 0.063 1850 0.063 1851 0.068 1852 0.066 1853 0.060 1854 0.042 1855 0.036 1856 0.032 1857 0.029 1858 0.045 1859 0.058 1860 0.065 1861 0.091 1862 0.524 1863 1.120 1864 1.816 1865 2.681 1866 2.773 1867 2.678 1868 2.612 1869 2.588 1870 2.481 1871 2.353 1872 2.253 1873 2.234 1874 2.252 1875 2.232 1876 2.180 1877 2.205 1878 2.256 1879 2.350 1880 2.120 1881 2.069 1882 1.918 1883 1.884 1884 1.831 1885 1.864 1886 1.775 1887 1.658 1888 1.693 1889 1.619 1890 1.552 1891 1.546 1892 1.588 1893 1.546 1894 1.632 1895 1.676 1896 1.770 1897 1.818 1898 1.797 1899 1.992 1900 2.137 1901 2.143 1902 2.159 1903 2.202 1904 2.264 1905 2.275 1906 2.337 1907 2.457 1908 2.627 1909 2.640 1910 2.653 1911 2.766 1912 2.868 1913 2.916 1914 2.912 1915 3.058 1916 3.609 1917 5.718 1918 14.592 1919 27.391 1920 25.952 1921 23.977 1922 22.963 1923 22.350 1924 21.251 1925 20.516 1926 19.643 1927 18.512 1928 17.604 1929 16.931 1930 16.185 1931 16.801 1932 19.487 1933 22.539 1934 27.053 1935 28.701 1936 33.779 1937 36.425 1938 37.165 1939 40.440 1940 42.968 1941 48.961 1942 72.422 1943 136.696 1944 201.003 1945 258.682 1946 269.422 1947 258.286 1948 252.292 1949 252.770 1950 257.357 1951 255.222 1952 259.105 1953 275.168 1953 266.071 1954 278.750 1955 280.769 1956 276.628 1957 274.898 1958 282.922 1959 290.798 1960 290.217 1961 296.169 1962 303.470 1963 309.347 1964 317.940 1965 320.904 1966 329.319 1967 344.663 1968 358.029 1969 368.226 1970 389.158 1971 424.131 1972 449.298 1973 469.898 1974 492.665 1975 576.649 1976 653.544 1977 718.943 1978 789.207 1979 845.116 1980 930.210 1981 1028.729 1982 1197.073 1983 1410.702 1984 1662.966 1985 1945.942 1986 2125.303 1987 2350.277 1988 2602.338 1989 2857.431 1990 3233.313 1991 3665.303 1992 4064.621 1993 4411.489 1994 4692.750 1995 4973.983 1996 5224.811 1997 5413.146 1998 5526.193 1999 5656.271 2000 5674.178 2001 5807.463 2002 6228.236 2003 6783.231 2004 7379.053