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 2.315 1822 2.314 1823 2.313 1824 2.313 1825 2.316 1826 2.315 1827 2.312 1828 2.315 1829 2.314 1830 2.313 1831 2.315 1832 2.314 1833 2.313 1834 2.315 1835 2.314 1836 2.312 1837 2.315 1838 2.316 1839 2.314 1840 2.313 1841 2.314 1842 2.316 1843 2.312 1844 2.315 1845 2.314 1846 2.314 1847 2.316 1848 2.314 1849 2.314 1850 2.314 1851 2.26 1852 2.259 1853 2.261 1854 2.258 1855 2.26 1856 2.259 1857 2.261 1858 2.259 1859 2.26 1860 2.261 1861 2.259 1862 2.261 1863 2.26 1864 2.259 1865 2.261 1866 2.259 1867 2.259 1868 2.26 1869 2.26 1870 2.26 1871 6.053 1872 6.053 1873 6.054 1874 6.053 1875 6.052 1876 6.053 1877 6.053 1878 6.054 1879 6.052 1880 6.054 1881 6.053 1882 6.053 1883 6.053 1884 6.053 1885 6.053 1886 6.053 1887 6.053 1888 6.053 1889 6.053 1890 6.053 1891 6.071 1892 6.071 1893 6.071 1894 6.071 1895 6.071 1896 6.071 1897 6.071 1898 6.071 1899 6.071 1900 6.071 1901 13.65 1902 -2.465 1903 -11.23 1904 -0.2868 1905 14.22 1906 15.97 1907 -5.924 1908 18.53 1909 4.326 1910 12.09 1911 -7.579 1912 -11.73 1913 -10.72 1914 22.5 1915 5.068 1916 -14.9 1917 42.12 1918 -19.66 1919 16.53 1920 -11.39 1921 20.73 1922 37.8 1923 7.567 1924 0.1774 1925 18.2 1926 -14.28 1927 -23.01 1928 23.53 1929 46.38 1930 -4.884 1931 -30.43 1932 -10.34 1933 25.6 1934 20.27 1935 22.74 1936 4.73 1937 17.27 1938 -7.526 1939 19.27 1940 2.31 1941 1.554 1942 2.516 1943 2.516 1944 2.516 1945 2.516 1946 2.516 1947 2.516 1948 1.609 1949 1.035 1950 3.543 1951 -1.475 1952 -27.1 1953 25.5 1954 20.65 1955 -3.159 1956 15.7 1957 -6.888 1958 4.872 1959 17.23 1960 11.12 1961 14.25 1962 0.1343 1963 9.277 1964 0.4255 1965 11.84 1966 10.67 1967 12.2 1968 14.01 1969 14.14 1970 14.23 1971 12.23 1972 13.69 1973 11.24 1974 6.133 1975 3.187 1976 7.098 1977 7.603 1978 8.493 1979 9.585 1980 10.24 1981 6.918 1982 5.008 1983 9.899 1984 9.059 1985 0.7036 1986 4.428 1987 10.49 1988 11.13 1989 9.384 1990 7.859 1991 6.48 1992 6.318 1993 12.47 1994 11.6 1995 8.071 1996 6.532 1997 7.725 1998 -2.428 1999 8.825 2000 10.5 2001 -3.733 2002 4.515 2003 4.152 2004 9.437 2005 6.879 2006 7.707 2007 7.47 2008 2.758 2009 1.014 2010 15.61 2011 4.661 2012 0.7403 2013 3.271