Year Total 1801 0 1802 0 1803 0 1804 0 1805 0 1806 0 1807 0 1808 0 1809 0 1810 0 1811 0 1812 0 1813 0 1814 0 1815 0 1816 0 1817 0 1818 0 1819 0 1820 0 1821 1.404 1822 1.403 1823 1.404 1824 1.404 1825 1.404 1826 1.404 1827 1.404 1828 1.403 1829 1.404 1830 1.403 1831 1.405 1832 1.404 1833 1.404 1834 1.403 1835 1.404 1836 1.403 1837 1.403 1838 1.405 1839 1.404 1840 1.404 1841 1.403 1842 1.404 1843 1.403 1844 1.404 1845 1.404 1846 1.404 1847 1.403 1848 1.404 1849 1.404 1850 1.404 1851 1.404 1852 1.403 1853 1.404 1854 1.404 1855 1.404 1856 1.403 1857 1.404 1858 1.404 1859 1.404 1860 1.404 1861 1.404 1862 1.403 1863 1.404 1864 1.403 1865 1.404 1866 1.403 1867 1.404 1868 1.404 1869 1.404 1870 1.403 1871 1.404 1872 1.404 1873 1.403 1874 1.404 1875 1.404 1876 1.404 1877 1.403 1878 1.404 1879 1.404 1880 1.404 1881 1.404 1882 1.404 1883 1.404 1884 1.404 1885 1.404 1886 1.404 1887 1.404 1888 1.404 1889 1.403 1890 1.404 1891 1.404 1892 1.403 1893 1.404 1894 1.404 1895 1.403 1896 1.404 1897 1.404 1898 1.404 1899 1.403 1900 1.404 1901 1.404 1902 1.404 1903 1.404 1904 1.404 1905 1.404 1906 1.404 1907 1.404 1908 1.403 1909 1.404 1910 1.403 1911 1.404 1912 1.404 1913 1.404 1914 2.239 1915 2.238 1916 2.239 1917 2.238 1918 2.238 1919 2.238 1920 2.238 1921 2.238 1922 2.238 1923 2.239 1924 2.238 1925 2.238 1926 2.239 1927 2.238 1928 2.238 1929 2.239 1930 2.238 1931 2.238 1932 2.238 1933 2.238 1934 2.238 1935 2.238 1936 2.239 1937 2.238 1938 2.239 1939 2.238 1940 2.239 1941 2.238 1942 2.238 1943 2.239 1944 2.238 1945 2.238 1946 2.239 1947 2.238 1948 2.238 1949 2.238 1950 2.239 1951 3.589 1952 4.109 1953 4.59 1954 4.997 1955 5.301 1956 5.477 1957 5.513 1958 5.402 1959 5.155 1960 4.804 1961 4.406 1962 4.033 1963 3.76 1964 3.626 1965 3.585 1966 3.562 1967 3.5 1968 3.406 1969 3.264 1970 3.09 1971 2.946 1972 2.825 1973 2.662 1974 -0.2611 1975 -0.4937 1976 -0.765 1977 -0.97 1978 -0.9625 1979 -0.6668 1980 -0.1667 1981 0.404 1982 0.8894 1983 1.228 1984 1.355 1985 1.326 1986 1.279 1987 1.249 1988 1.151 1989 0.9853 1990 0.7794 1991 7.275 1992 7.043 1993 6.91 1994 6.913 1995 7.01 1996 7.134 1997 7.222 1998 7.264 1999 7.235 2000 7.157 2001 7.071 2002 5.269 2003 -1.713 2004 9.773 2005 5.815