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 0.3186
1822 0.3186
1823 0.3186
1824 0.3186
1825 0.3186
1826 0.3186
1827 0.3186
1828 0.3186
1829 0.3186
1830 0.3186
1831 0.3186
1832 0.3186
1833 0.3186
1834 0.3186
1835 0.3186
1836 0.3186
1837 0.3186
1838 0.3186
1839 0.3186
1840 0.3186
1841 0.3186
1842 0.3186
1843 0.3186
1844 0.3186
1845 0.3186
1846 0.3186
1847 0.3186
1848 0.3186
1849 0.3186
1850 0.3186
1851 0.32
1852 0.32
1853 0.32
1854 0.32
1855 0.3201
1856 0.32
1857 0.3201
1858 0.32
1859 0.32
1860 0.32
1861 0.3201
1862 0.32
1863 0.32
1864 0.32
1865 0.3201
1866 0.32
1867 0.3201
1868 0.32
1869 0.32
1870 0.32
1871 0.6759
1872 0.6759
1873 0.6759
1874 0.6759
1875 0.6759
1876 0.6759
1877 0.6759
1878 0.6759
1879 0.6759
1880 0.6759
1881 0.6759
1882 0.6759
1883 0.6759
1884 0.6759
1885 0.6759
1886 0.6759
1887 0.6759
1888 0.6759
1889 0.6759
1890 0.6759
1891 1.728
1892 1.728
1893 1.728
1894 1.728
1895 1.728
1896 1.728
1897 1.728
1898 1.728
1899 1.728
1900 1.728
1901 1.721
1902 1.332
1903 20.16
1904 -3.526
1905 -17.4
1906 7.283
1907 11.82
1908 4.09
1909 12.72
1910 3.06
1911 -4.828
1912 -4.029
1913 10.83
1914 -1.924
1915 5.108
1916 8.428
1917 13.33
1918 -3.497
1919 3.725
1920 -0.1455
1921 4.848
1922 12.87
1923 3.666
1924 9.221
1925 5.982
1926 2.185
1927 0.3657
1928 3.066
1929 5.505
1930 4.207
1931 1.531
1932 6.197
1933 -2.736
1934 5.485
1935 10.55
1936 6.031
1937 1.408
1938 6.842
1939 -1.544
1940 -6.562
1941 -3.606
1942 5.153
1943 -6.925
1944 -14.52
1945 -45.22
1946 8.39
1947 11.63
1948 30.83
1949 21
1950 30.6
1951 7.421
1952 12.57
1953 9.452
1954 9.606
1955 7.798
1956 3.576
1957 7.805
1958 6.511
1959 6.951
1960 8.402
1961 6.565
1962 9.086
1963 13.56
1964 13.25
1965 7.708
1966 10.28
1967 10.75
1968 10.07
1969 9.408
1970 10.19
1971 14.34
1972 15.73
1973 11.48
1974 -3.619
1975 6.58
1976 18.01
1977 11.51
1978 13.04
1979 6.827
1980 4.809
1981 6.878
1982 4.863
1983 10.41
1984 10.41
1985 4.05
1986 16.18
1987 10.24
1988 3.041
1989 9.66
1990 5.475
1991 8.786
1992 6.514
1993 6.999
1994 7.131
1995 5.64
1996 6.545
1997 6.943
1998 5.075
1999 3.875
2000 4.944
2001 -3.116
2002 4.63
2003 2.112
2004 3.785
2005 2.556
2006 2.636
2007 3.268
2008 -5.509
2009 0.1345
2010 7.346
2011 0.1379
2012 1.268
2013 2.017