Year Total
1801 0.1659
1802 0.1659
1803 0.1659
1804 0.1659
1805 0.1659
1806 0.1659
1807 0.1659
1808 0.1659
1809 0.1659
1810 0.1659
1811 0.1659
1812 0.1659
1813 0.1659
1814 0.1659
1815 0.1659
1816 0.1659
1817 0.1659
1818 0.1659
1819 0.1659
1820 0.1659
1821 1.854
1822 1.849
1823 1.845
1824 1.841
1825 1.853
1826 1.849
1827 1.844
1828 1.856
1829 1.835
1830 1.847
1831 1.859
1832 1.838
1833 1.85
1834 1.846
1835 1.857
1836 1.837
1837 1.848
1838 1.859
1839 1.839
1840 1.85
1841 1.846
1842 1.856
1843 1.837
1844 1.862
1845 1.843
1846 1.853
1847 1.834
1848 1.859
1849 1.84
1850 1.85
1851 1.845
1852 1.855
1853 1.851
1854 1.846
1855 1.842
1856 1.851
1857 1.847
1858 1.856
1859 1.838
1860 1.847
1861 1.856
1862 1.851
1863 1.847
1864 1.842
1865 1.851
1866 1.846
1867 1.842
1868 1.85
1869 1.846
1870 1.854
1871 1.849
1872 1.845
1873 1.853
1874 1.848
1875 1.844
1876 1.852
1877 1.847
1878 1.843
1879 1.85
1880 1.846
1881 1.853
1882 1.848
1883 1.844
1884 1.851
1885 1.847
1886 1.853
1887 1.849
1888 1.844
1889 1.851
1890 1.847
1891 1.842
1892 1.849
1893 1.855
1894 1.84
1895 1.857
1896 1.841
1897 1.848
1898 1.854
1899 1.849
1900 1.845
1901 1.85
1902 1.846
1903 1.852
1904 1.847
1905 1.843
1906 1.848
1907 1.854
1908 1.839
1909 1.854
1910 1.85
1911 1.845
1912 1.85
1913 1.846
1914 4.519
1915 4.515
1916 4.51
1917 4.524
1918 4.51
1919 4.515
1920 4.52
1921 4.515
1922 4.52
1923 4.515
1924 4.511
1925 4.515
1926 4.519
1927 4.515
1928 4.519
1929 4.514
1930 4.519
1931 4.514
1932 4.518
1933 4.513
1934 4.517
1935 4.521
1936 4.516
1937 4.512
1938 4.516
1939 4.519
1940 4.514
1941 4.518
1942 4.513
1943 4.517
1944 4.52
1945 4.516
1946 4.511
1947 4.522
1948 4.51
1949 4.52
1950 4.516
1951 5.236
1952 5.232
1953 5.345
1954 5.497
1955 5.691
1956 5.882
1957 6.055
1958 6.19
1959 6.268
1960 6.295
1961 6.301
1962 6.31
1963 6.354
1964 6.451
1965 6.569
1966 6.703
1967 6.771
1968 6.727
1969 6.541
1970 6.267
1971 1.671
1972 1.681
1973 1.647
1974 1.655
1975 1.692
1976 32.18
1977 4.814
1978 -1.605
1979 0.5362
1980 -7.959
1981 4.806
1982 -1.592
1983 0.5325
1984 4.266
1985 7.024
1986 3.99
1987 9.226
1988 5.624
1989 4.491
1990 2.246
1991 1.802
1992 3.616
1993 4.328
1994 6.872
1995 5.877
1996 6.889
1997 7.203
1998 7.752
1999 10.42
2000 3.253
2001 -0.6581
2002 -0.8986
2003 -1.848
2004 3.097
2005 4.825
2006 8.953
2007 9.312
2008 -2.713
2009 -10.42
2010 8.824
2011 1.931