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 1.86
1822 1.855
1823 1.861
1824 1.857
1825 1.852
1826 1.858
1827 1.863
1828 1.849
1829 1.864
1830 1.859
1831 1.855
1832 1.86
1833 1.855
1834 1.851
1835 1.866
1836 1.851
1837 1.856
1838 1.861
1839 1.857
1840 1.861
1841 1.857
1842 1.852
1843 1.857
1844 1.861
1845 1.856
1846 1.861
1847 1.856
1848 1.852
1849 1.865
1850 1.851
1851 1.864
1852 1.851
1853 1.863
1854 1.85
1855 1.862
1856 1.858
1857 1.853
1858 1.857
1859 1.861
1860 1.856
1861 1.859
1862 1.855
1863 1.858
1864 1.861
1865 1.857
1866 1.852
1867 1.863
1868 1.859
1869 1.854
1870 1.857
1871 1.86
1872 1.855
1873 1.858
1874 1.854
1875 1.864
1876 1.852
1877 1.862
1878 1.857
1879 1.853
1880 1.862
1881 1.858
1882 1.853
1883 1.862
1884 1.858
1885 1.853
1886 1.862
1887 1.858
1888 1.853
1889 1.862
1890 1.857
1891 1.853
1892 1.861
1893 1.857
1894 1.858
1895 1.854
1896 1.862
1897 1.857
1898 1.853
1899 1.861
1900 1.856
1901 1.858
1902 1.859
1903 1.855
1904 1.856
1905 1.858
1906 1.859
1907 1.86
1908 1.856
1909 1.857
1910 1.858
1911 1.859
1912 1.855
1913 1.856
1914 4.52
1915 4.515
1916 4.51
1917 4.517
1918 4.512
1919 4.519
1920 4.514
1921 4.515
1922 4.51
1923 4.516
1924 4.517
1925 4.512
1926 4.513
1927 4.519
1928 4.514
1929 4.515
1930 4.51
1931 4.516
1932 4.516
1933 4.516
1934 4.512
1935 4.517
1936 4.512
1937 4.517
1938 4.513
1939 4.513
1940 4.513
1941 4.518
1942 4.513
1943 4.513
1944 4.513
1945 4.518
1946 4.513
1947 4.513
1948 4.513
1949 4.518
1950 4.513
1951 8.228
1952 8.56
1953 9.037
1954 9.585
1955 10.11
1956 10.55
1957 10.83
1958 10.94
1959 10.87
1960 10.65
1961 10.37
1962 10.11
1963 9.978
1964 9.996
1965 10.09
1966 10.21
1967 10.21
1968 10
1969 9.568
1970 8.987
1971 13.04
1972 6.174
1973 6.809
1974 5.717
1975 0.6381
1976 5.964
1977 8.819
1978 6.002
1979 4.866
1980 8.677
1981 0.6678
1982 -4.419
1983 3.448
1984 -5.164
1985 3.643
1986 7.097
1987 5.512
1988 5.6
1989 6.674
1990 -11.72
1991 -0.1115
1992 -5.11
1993 -5.026
1994 5.924
1995 3.725
1996 1.521
1997 1.436
1998 7.728
1999 1.352
2000 7.092
2001 1.277
2002 -0.968
2003 -0.4105
2004 2.543
2005 1.723
2006 6.576
2007 2.38
2008 2.326
2009 1.413
2010 1.184
2011 2.556
2012 2.564