Year Total
1801 0.0236
1802 0.0236
1803 0.0236
1804 0.0236
1805 0.0236
1806 0.0236
1807 0.0236
1808 0.0236
1809 0.0236
1810 0.0236
1811 0.0236
1812 0.0236
1813 0.0236
1814 0.0236
1815 0.0236
1816 0.0236
1817 0.0236
1818 0.0236
1819 0.0236
1820 0.0236
1821 0.5822
1822 0.5822
1823 0.5822
1824 0.5822
1825 0.5822
1826 0.5822
1827 0.5822
1828 0.5822
1829 0.5822
1830 0.5822
1831 0.5822
1832 0.5822
1833 0.5822
1834 0.5822
1835 0.5822
1836 0.5822
1837 0.5822
1838 0.5822
1839 0.5822
1840 0.5822
1841 0.5822
1842 0.5822
1843 0.5822
1844 0.5822
1845 0.5822
1846 0.5822
1847 0.5822
1848 0.5822
1849 0.5822
1850 0.5822
1851 1.409
1852 1.409
1853 1.409
1854 1.408
1855 1.409
1856 1.409
1857 1.409
1858 1.409
1859 1.409
1860 1.409
1861 1.641
1862 1.64
1863 1.64
1864 1.64
1865 1.641
1866 1.64
1867 1.641
1868 1.64
1869 1.64
1870 1.64
1871 1.641
1872 1.64
1873 1.64
1874 1.64
1875 1.64
1876 1.64
1877 1.64
1878 1.785
1879 1.791
1880 1.795
1881 1.801
1882 1.805
1883 1.811
1884 1.816
1885 1.822
1886 1.826
1887 1.832
1888 1.838
1889 1.797
1890 1.802
1891 1.806
1892 1.811
1893 1.816
1894 1.848
1895 1.851
1896 1.882
1897 1.884
1898 1.956
1899 1.959
1900 1.962
1901 1.964
1902 1.967
1903 1.97
1904 1.974
1905 1.976
1906 1.979
1907 1.983
1908 1.986
1909 1.988
1910 1.992
1911 3.432
1912 2.002
1913 2.005
1914 1.701
1915 -1.338
1916 -1.338
1917 -1.338
1918 -1.338
1919 2.483
1920 2.484
1921 2.484
1922 2.484
1923 3.172
1924 3.172
1925 3.172
1926 3.172
1927 3.172
1928 3.172
1929 3.172
1930 3.172
1931 3.172
1932 4.218
1933 6.504
1934 6.356
1935 8.279
1936 4.513
1937 3.065
1938 2.724
1939 5.661
1940 3.694
1941 3.209
1942 2.934
1943 3.646
1944 3.812
1945 4.043
1946 4.237
1947 2.388
1948 2.388
1949 2.388
1950 2.388
1951 3.055
1952 4.636
1953 5.522
1954 6.147
1955 5.779
1956 5.475
1957 5.41
1958 5.119
1959 5.332
1960 5.847
1961 6.546
1962 6.796
1963 6.64
1964 5.763
1965 4.584
1966 3.27
1967 2.11
1968 1.689
1969 1.79
1970 3.189
1971 5.17
1972 6.68
1973 7.31
1974 7.452
1975 6.914
1976 6.509
1977 6.082
1978 5.943
1979 5.931
1980 6.145
1981 6.4
1982 6.41
1983 6.651
1984 6.604
1985 6.585
1986 6.619
1987 6.537
1988 6.715
1989 7.027
1990 7.391
1991 7.655
1992 7.938
1993 8.078
1994 8.254
1995 8.23
1996 8.342
1997 8.313
1998 9.871
1999 9.378
2000 -0.3058
2001 -20.77
2002 -21.17
2003 -14.4
2004 -1.604
2005 -1.341
2006 -5.202
2007 5.363
2008 7.119
2009 7.4
2010 9.83
2011 9.883
2012 5.845