Year Years
1800 35.4
1801 35.4
1802 35.4
1803 35.4
1804 35.4
1805 35.4
1806 35.4
1807 35.4
1808 35.4
1809 35.4
1810 35.4
1811 35.4
1812 35.4
1813 35.4
1814 35.4
1815 35.4
1816 35.4
1817 35.4
1818 35.4
1819 35.4
1820 35.4
1821 35.4
1822 35.4
1823 35.4
1824 35.4
1825 35.4
1826 35.4
1827 35.4
1828 35.4
1829 35.4
1830 35.4
1831 35.4
1832 35.4
1833 35.4
1834 35.4
1835 35.4
1836 35.4
1837 35.4
1838 35.4
1839 35.4
1840 35.4
1841 35.4
1842 35.4
1843 35.4
1844 35.4
1845 35.4
1846 35.4
1847 35.4
1848 35.4
1849 35.4
1850 35.4
1851 35.4
1852 35.4
1853 35.4
1854 35.4
1855 35.4
1856 35.4
1857 35.4
1858 35.4
1859 35.4
1860 35.4
1861 35.4
1862 35.4
1863 35.4
1864 35.4
1865 35.4
1866 35.4
1867 35.4
1868 35.4
1869 35.4
1870 35.4
1871 35.41
1872 35.43
1873 35.44
1874 35.45
1875 35.47
1876 35.48
1877 35.5
1878 35.51
1879 35.52
1880 35.54
1881 35.55
1882 35.56
1883 35.58
1884 35.59
1885 35.61
1886 35.62
1887 35.63
1888 35.65
1889 35.66
1890 35.67
1891 35.69
1892 35.7
1893 35.72
1894 35.73
1895 35.74
1896 35.76
1897 35.77
1898 35.78
1899 35.8
1900 35.81
1901 35.83
1902 35.84
1903 35.85
1904 35.87
1905 35.88
1906 35.89
1907 35.91
1908 35.92
1909 35.94
1910 35.95
1911 35.96
1912 35.98
1913 35.99
1914 36
1915 36.02
1916 36.03
1917 36.05
1918 19.79
1919 36.07
1920 36.09
1921 36.91
1922 37.74
1923 38.56
1924 39.38
1925 40.2
1926 41.03
1927 41.86
1928 42.68
1929 43.5
1930 44.34
1931 45.16
1932 45.99
1933 46.82
1934 47.65
1935 48.48
1936 49.31
1937 50.14
1938 50.98
1939 51.81
1940 52.64
1941 41.55
1942 38.5
1943 37.32
1944 35.72
1945 37.56
1946 47.36
1947 57.67
1948 58.83
1949 60.17
1950 61.02
1951 61.15
1952 61.45
1953 61.81
1954 62.24
1955 62.74
1956 63.3
1957 63.92
1958 64.59
1959 65.3
1960 66.04
1961 66.77
1962 67.49
1963 68.17
1964 68.83
1965 69.46
1966 70.08
1967 70.69
1968 71.32
1969 71.95
1970 72.58
1971 72.69
1972 72.8
1973 72.95
1974 73.12
1975 73.26
1976 73.41
1977 73.56
1978 73.71
1979 73.19
1980 74
1981 74.03
1982 74.07
1983 74.11
1984 74.17
1985 74.24
1986 74.34
1987 74.46
1988 74.62
1989 74.81
1990 74.97
1991 74.9
1992 74.71
1993 74.42
1994 74.15
1995 73.95
1996 73.81
1997 73.72
1998 73.64
1999 73.63
2000 73.84
2001 74.02
2002 74.28
2003 74.52
2004 74.74
2005 75
2006 75.27
2007 75.64
2008 76
2009 76.21
2010 76.36
2011 76.43
2012 76.53
2013 76.67
2014 76.81
2015 76.93
2016 77.04
2017 77.2
2018 77.35