Year Total
1801 0.382
1802 0.382
1803 0.382
1804 0.382
1805 0.382
1806 0.382
1807 0.382
1808 0.382
1809 0.382
1810 0.382
1811 0.382
1812 0.382
1813 0.382
1814 0.382
1815 0.382
1816 0.382
1817 0.382
1818 0.382
1819 0.382
1820 0.382
1821 0.7267
1822 0.7335
1823 0.7243
1824 0.7311
1825 0.7298
1826 0.7286
1827 0.7274
1828 0.7341
1829 0.7251
1830 0.7317
1831 0.7304
1832 0.7292
1833 0.728
1834 0.7269
1835 0.7257
1836 0.7321
1837 0.7309
1838 0.7297
1839 0.7285
1840 0.7273
1841 0.7261
1842 0.7324
1843 0.7312
1844 0.73
1845 0.7288
1846 0.7276
1847 0.7264
1848 0.7325
1849 0.724
1850 0.7301
1851 0.7289
1852 0.7349
1853 0.7265
1854 0.7253
1855 0.7313
1856 0.7301
1857 0.7289
1858 0.7277
1859 0.7335
1860 0.7253
1861 0.7311
1862 0.7299
1863 0.7287
1864 0.7275
1865 0.7263
1866 0.732
1867 0.7308
1868 0.7296
1869 0.7284
1870 0.7272
1871 0.7327
1872 0.7248
1873 0.7303
1874 0.7291
1875 0.7279
1876 0.7334
1877 0.7255
1878 0.7309
1879 0.7297
1880 0.7285
1881 0.7273
1882 0.7326
1883 0.7249
1884 0.7302
1885 0.729
1886 0.7278
1887 0.733
1888 0.7254
1889 0.7306
1890 0.7294
1891 0.7282
1892 2.12
1893 2.121
1894 2.128
1895 2.122
1896 2.121
1897 2.121
1898 2.119
1899 2.123
1900 2.121
1901 2.123
1902 2.316
1903 2.321
1904 2.319
1905 2.318
1906 2.32
1907 2.317
1908 2.318
1909 2.319
1910 2.318
1911 2.317
1912 1.224
1913 1.222
1914 4.584
1915 4.581
1916 4.582
1917 4.584
1918 4.581
1919 4.586
1920 4.579
1921 4.585
1922 4.515
1923 4.517
1924 4.515
1925 4.517
1926 4.515
1927 4.513
1928 4.519
1929 4.516
1930 4.514
1931 4.516
1932 5.347
1933 5.344
1934 5.345
1935 5.349
1936 5.346
1937 5.345
1938 5.344
1939 5.347
1940 5.349
1941 5.343
1942 5.348
1943 5.345
1944 5.348
1945 5.345
1946 5.345
1947 5.347
1948 5.348
1949 5.344
1950 5.347
1951 7.219
1952 3.076
1953 3.108
1954 5.62
1955 0.7126
1956 0.04171
1957 3.112
1958 1.802
1959 3.892
1960 6.775
1961 -6.181
1962 8.449
1963 9.282
1964 3.748
1965 0.1578
1966 2.189
1967 -0.1573
1968 8.039
1969 -0.6172
1970 6.947
1971 15.81
1972 5.976
1973 9.52
1974 1.606
1975 3.611
1976 9.953
1977 7.127
1978 7.008
1979 16.59
1980 -2.759
1981 -4.068
1982 -0.7977
1983 0.6241
1984 4.955
1985 10.74
1986 1.367
1987 1.755
1988 6.218
1989 10.93
1990 8.143
1991 2.499
1992 7.795
1993 6.157
1994 -4.055
1995 0.00717
1996 9.467
1997 11.97
1998 1.49
1999 0.9427
2000 4.489
2001 -1.179
2002 0.607
2003 -4.763
2004 -1.331
2005 9.668
2006 8.144
2007 10.75
2008 -3.637
2009 -0.9063
2010 3.553
2011 7.137
2012 1.979
2013 2.674