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 1.822
1822 1.856
1823 1.814
1824 1.847
1825 1.842
1826 1.838
1827 1.834
1828 1.829
1829 1.825
1830 1.857
1831 1.817
1832 1.848
1833 1.844
1834 1.839
1835 1.835
1836 1.831
1837 1.826
1838 1.856
1839 1.818
1840 1.848
1841 1.843
1842 1.839
1843 1.834
1844 1.83
1845 1.826
1846 1.854
1847 1.817
1848 1.845
1849 1.841
1850 1.836
1851 1.832
1852 1.828
1853 1.824
1854 1.85
1855 1.846
1856 1.811
1857 1.837
1858 1.863
1859 1.828
1860 1.824
1861 1.849
1862 1.816
1863 1.841
1864 1.836
1865 1.832
1866 1.856
1867 1.823
1868 1.847
1869 1.843
1870 1.811
1871 1.862
1872 1.83
1873 1.826
1874 1.848
1875 1.817
1876 1.84
1877 1.835
1878 1.831
1879 1.853
1880 1.822
1881 1.844
1882 1.84
1883 1.835
1884 1.831
1885 1.827
1886 1.848
1887 1.843
1888 1.839
1889 1.834
1890 1.83
1891 1.826
1892 1.846
1893 1.841
1894 1.837
1895 1.833
1896 1.828
1897 1.847
1898 1.82
1899 1.839
1900 1.834
1901 1.853
1902 1.826
1903 1.844
1904 1.839
1905 1.835
1906 1.831
1907 1.827
1908 1.844
1909 1.84
1910 1.835
1911 1.831
1912 1.827
1913 1.843
1914 4.486
1915 4.482
1916 4.477
1917 4.494
1918 4.489
1919 4.464
1920 4.501
1921 4.476
1922 4.472
1923 4.488
1924 4.483
1925 4.499
1926 4.474
1927 4.49
1928 4.485
1929 4.481
1930 4.476
1931 4.491
1932 4.467
1933 4.501
1934 4.478
1935 4.473
1936 4.487
1937 4.483
1938 4.479
1939 4.492
1940 4.488
1941 4.483
1942 4.479
1943 4.475
1944 4.488
1945 4.483
1946 4.479
1947 4.492
1948 4.487
1949 4.483
1950 4.478
1951 12.1
1952 12.41
1953 12.53
1954 12.5
1955 12.37
1956 12.22
1957 12.03
1958 11.83
1959 11.64
1960 11.44
1961 11.25
1962 11.04
1963 10.82
1964 10.56
1965 10.3
1966 10.03
1967 9.787
1968 9.596
1969 9.465
1970 9.356
1971 4.668
1972 8.131
1973 7.806
1974 5.604
1975 0.5591
1976 3.288
1977 2.836
1978 1.478
1979 0.03091
1980 2.207
1981 -0.1351
1982 1.245
1983 1.768
1984 1.786
1985 2.322
1986 3.241
1987 5.54
1988 5.075
1989 4.833
1990 3.825
1991 2.677
1992 1.112
1993 -0.9053
1994 2.304
1995 2.399
1996 3.935
1997 8.049
1998 2.247
1999 3.59
2000 1.42
2001 12.99
2002 7.721
2003 8.943
2004 8.639
2005 7.801
2006 4.975
2007 0.1614
2008 -4.224
2009 -5.058
2010 -3.426
2011 -2.834