Year Years
1800 374
1801 374
1802 374
1803 374
1804 374
1805 374
1806 374
1807 374
1808 374
1809 374
1810 374
1811 374
1812 374
1813 374
1814 374
1815 374
1816 374
1817 374
1818 374
1819 374
1820 374
1821 374
1822 374
1823 374
1824 374
1825 374
1826 374
1827 374
1828 374
1829 374
1830 374
1831 374
1832 374
1833 374
1834 374
1835 374
1836 374
1837 374
1838 374
1839 374
1840 374
1841 374
1842 374
1843 374
1844 374
1845 374
1846 374
1847 374
1848 374
1849 374
1850 374
1851 374
1852 374
1853 374
1854 374
1855 374
1856 374
1857 374
1858 374
1859 374
1860 374
1861 374
1862 374
1863 374
1864 374
1865 374
1866 374
1867 374
1868 374
1869 374
1870 374
1871 374
1872 374
1873 374
1874 374
1875 374
1876 374
1877 374
1878 374
1879 374
1880 374
1881 374
1882 374
1883 374
1884 374
1885 374
1886 374
1887 374
1888 374
1889 374
1890 374
1891 374
1892 374
1893 374
1894 374
1895 374
1896 373.9
1897 373.8
1898 373.7
1899 373.5
1900 373.2
1901 372.9
1902 372.5
1903 372.1
1904 371.6
1905 371
1906 370.4
1907 369.7
1908 369
1909 368.2
1910 367.4
1911 366.5
1912 365.7
1913 364.8
1914 363.9
1915 363
1916 362.2
1917 361.3
1918 360.4
1919 359.5
1920 358.6
1921 357.8
1922 356.9
1923 356
1924 355.1
1925 354.3
1926 353.4
1927 352.5
1928 351.6
1929 350.8
1930 349.9
1931 349
1932 348.1
1933 330.8
1934 314.1
1935 297.8
1936 282.1
1937 265.9
1938 251.2
1939 236.9
1940 223
1941 209.5
1951 93.4
1952 92.6
1953 91.9
1954 91.1
1955 90.3
1956 89.5
1957 88.8
1958 87.9
1959 87.1
1960 86.3
1961 85.5
1962 84.7
1963 84
1964 83.2
1965 82.5
1966 81.7
1967 80.9
1968 80.1
1969 79.2
1970 78.2
1971 77.2
1972 76.1
1973 74.8
1974 73.5
1975 72
1976 70.6
1977 69.1
1978 67.5
1979 65.8
1980 64.1
1981 62.3
1982 60.5
1983 58.6
1984 56.7
1985 54.9
1986 53.1
1987 51.3
1988 49.6
1989 47.9
1990 46.2
1991 44.7
1992 43.1
1993 41.7
1994 40.3
1995 39
1996 37.8
1997 36.7
1998 35.6
1999 34.6
2000 33.5
2001 32.5
2002 31.5
2003 30.5
2004 29.4
2005 28.5
2006 27.6
2007 26.7
2008 25.8
2009 25
2010 24.2
2011 23.4
2012 22.7
2013 21.9