Year Total
1801 0.1632
1802 0.1629
1803 0.1626
1804 0.1631
1805 0.1629
1806 0.1634
1807 0.1623
1808 0.1628
1809 0.1633
1810 0.1631
1811 0.1628
1812 0.1633
1813 0.163
1814 0.1628
1815 0.1625
1816 0.163
1817 0.1635
1818 0.1624
1819 0.1629
1820 0.1634
1821 0.4884
1822 0.4881
1823 0.4879
1824 0.4884
1825 0.4881
1826 0.4886
1827 0.4883
1828 0.488
1829 0.4885
1830 0.4882
1831 0.488
1832 0.4884
1833 0.4882
1834 0.4879
1835 0.4884
1836 0.4881
1837 0.4886
1838 0.4883
1839 0.488
1840 0.4885
1841 0.4882
1842 0.4879
1843 0.4884
1844 0.01445
1845 0.01493
1846 0.01469
1847 0.01518
1848 0.01494
1849 0.01471
1850 0.01448
1851 0.07942
1852 0.08029
1853 0.07969
1854 0.07983
1855 0.07923
1856 0.08011
1857 0.07952
1858 0.07966
1859 0.07981
1860 0.07995
1861 0.08011
1862 0.07951
1863 0.07966
1864 0.07982
1865 0.07998
1866 0.07938
1867 0.07954
1868 0.0797
1869 0.07986
1870 0.08003
1871 0.07943
1872 0.08038
1873 0.07978
1874 0.07918
1875 0.08013
1876 0.07953
1877 0.07971
1878 0.07989
1879 0.08008
1880 0.07948
1881 0.07967
1882 -0.1595
1883 -0.1595
1884 -0.1602
1885 -0.1594
1886 -0.1593
1887 -0.16
1888 -0.1591
1889 -0.1598
1890 -0.1597
1891 -0.1596
1892 0.2319
1893 0.2326
1894 0.2325
1895 0.2325
1896 0.2315
1897 0.2323
1898 0.233
1899 0.2321
1900 0.232
1901 0.3247
1902 1.883
1903 1.883
1904 1.884
1905 1.883
1906 1.883
1907 1.883
1908 1.883
1909 1.884
1910 1.883
1911 1.884
1912 1.481
1913 1.481
1914 3.681
1915 3.681
1916 3.681
1917 3.68
1918 3.681
1919 3.68
1920 3.681
1921 3.681
1922 4.097
1923 4.097
1924 4.097
1925 4.097
1926 4.097
1927 4.097
1928 4.097
1929 4.097
1930 4.097
1931 4.097
1932 4.097
1933 4.097
1934 4.097
1935 4.097
1936 4.097
1937 5.33
1938 5.33
1939 5.33
1940 5.33
1941 5.33
1942 5.33
1943 5.33
1944 5.33
1945 5.33
1946 5.33
1947 5.244
1948 5.244
1949 5.245
1950 5.244
1951 5.057
1952 5.477
1953 5.706
1954 5.801
1955 5.814
1956 5.794
1957 5.781
1958 5.803
1959 5.875
1960 5.983
1961 3.554
1962 3.639
1963 6.389
1964 4.903
1965 -2.679
1966 0.01788
1967 13.37
1968 7.929
1969 2.607
1970 12.71
1971 6.899
1972 7.495
1973 11.63
1974 2.616
1975 0.5486
1976 2.76
1977 5.933
1978 1.895
1979 12.26
1980 -1.572
1981 6.363
1982 -5.949
1983 -3.93
1984 8.43
1985 -4.579
1986 7.793
1987 -6.575
1988 1.004
1989 7.497
1990 2.518
1991 2.919
1992 3.224
1993 2.66
1994 5.176
1995 2.591
1996 4.929
1997 -2.056
1998 1.416
1999 8.807
2000 -1.843
2001 1.668
2002 2.719
2003 0.4894
2004 4.874
2005 0.494
2006 1.635
2007 -0.8414
2008 1.215
2009 -1.069
2010 0.3706
2011 2.279
2012 2.053
2013 3.351