Year Total
1801 0
1802 0
1803 0
1804 0
1805 0
1806 0
1807 0
1808 0
1809 0
1810 0
1811 0
1812 0
1813 0
1814 0
1815 0
1816 0
1817 0
1818 0
1819 0
1820 0
1821 0.9972
1822 0.9973
1823 0.9972
1824 0.9973
1825 0.9972
1826 0.9972
1827 0.9973
1828 0.9972
1829 0.9973
1830 0.9972
1831 0.9973
1832 0.9972
1833 0.9973
1834 0.9972
1835 0.9972
1836 0.9973
1837 0.9972
1838 0.9973
1839 0.9972
1840 0.9973
1841 0.9972
1842 0.9973
1843 0.9972
1844 0.9972
1845 0.9973
1846 0.9972
1847 0.9973
1848 0.9972
1849 0.9973
1850 0.9973
1851 0.9973
1852 0.9972
1853 0.9973
1854 0.9972
1855 0.9972
1856 0.9973
1857 0.9973
1858 0.9972
1859 0.9972
1860 0.9972
1861 0.9973
1862 0.9973
1863 0.9972
1864 0.9973
1865 0.9972
1866 0.9972
1867 0.9973
1868 0.9972
1869 0.9973
1870 0.9972
1871 0.9973
1872 0.9972
1873 0.9972
1874 0.9972
1875 0.9972
1876 0.9973
1877 0.9972
1878 0.9973
1879 0.9972
1880 0.9973
1881 0.9972
1882 0.9973
1883 0.9972
1884 0.9973
1885 0.9972
1886 0.9973
1887 0.9972
1888 0.9973
1889 0.9973
1890 0.9973
1891 0.9972
1892 0.9972
1893 0.9972
1894 0.9972
1895 0.9973
1896 0.9972
1897 0.9973
1898 0.9972
1899 0.9973
1900 0.9972
1901 0.9972
1902 0.9973
1903 0.9972
1904 0.9972
1905 0.9973
1906 0.9972
1907 0.9973
1908 0.9973
1909 0.9972
1910 0.9972
1911 0.9973
1912 0.9973
1913 0.9972
1914 1.191
1915 1.191
1916 1.191
1917 1.191
1918 1.191
1919 1.191
1920 1.191
1921 1.191
1922 1.191
1923 1.191
1924 1.191
1925 1.191
1926 1.191
1927 1.191
1928 1.191
1929 1.191
1930 1.191
1931 1.191
1932 1.191
1933 1.191
1934 1.191
1935 1.191
1936 1.191
1937 1.191
1938 1.191
1939 1.191
1940 1.191
1941 1.191
1942 1.191
1943 1.191
1944 1.191
1945 1.191
1946 1.191
1947 1.191
1948 1.191
1949 1.191
1950 1.191
1951 5.112
1952 4.942
1953 4.788
1954 4.741
1955 4.704
1956 4.593
1957 4.585
1958 4.589
1959 4.605
1960 7.31
1961 5.025
1962 11.5
1963 10.84
1964 1.136
1965 8.462
1966 -0.3999
1967 1.304
1968 1.645
1969 -2.193
1970 3.886
1971 6.478
1972 -4.475
1973 -16.42
1974 9.466
1975 -2.125
1976 1.3
1977 8.371
1978 14.03
1979 7.638
1980 5.218
1981 1.47
1982 -0.99
1983 -1.659
1984 -16.78
1985 1.916
1986 4.747
1987 -3.422
1988 5.834
1989 0.4015
1990 -1.472
1991 2.922
1992 -6.059
1993 1.911
1994 4.538
1995 3.141
1996 4.004
1997 3.54
1998 11.24
1999 0.07177
2000 -0.7789
2001 7.735
2002 3.598
2003 5.078
2004 -0.2504
2005 8.002
2006 5.831
2007 0.6261
2008 9.673
2009 -0.8629
2010 11.21
2011 2.638
2012 11.58
2013 4.031