Year Years
1800 26.7
1801 26.7
1802 26.7
1803 26.7
1804 26.7
1805 26.7
1806 26.7
1807 26.7
1808 26.7
1809 26.7
1810 26.7
1811 26.7
1812 26.7
1813 26.7
1814 26.7
1815 26.7
1816 26.7
1817 26.7
1818 26.7
1819 26.7
1820 26.7
1821 26.7
1822 26.7
1823 26.7
1824 26.7
1825 26.7
1826 26.7
1827 26.7
1828 26.7
1829 26.7
1830 26.7
1831 26.7
1832 26.7
1833 26.7
1834 26.7
1835 26.7
1836 26.7
1837 26.7
1838 26.7
1839 26.7
1840 26.7
1841 26.7
1842 26.7
1843 26.7
1844 26.7
1845 26.7
1846 26.7
1847 26.7
1848 26.7
1849 26.7
1850 26.7
1851 26.7
1852 26.7
1853 26.7
1854 26.7
1855 26.7
1856 26.7
1857 26.7
1858 26.7
1859 26.7
1860 26.7
1861 26.7
1862 26.7
1863 26.7
1864 26.7
1865 26.7
1866 26.7
1867 26.7
1868 26.7
1869 26.7
1870 26.7
1871 26.69
1872 26.68
1873 26.68
1874 26.67
1875 26.66
1876 26.65
1877 26.65
1878 26.64
1879 26.63
1880 26.62
1881 26.61
1882 26.61
1883 26.6
1884 26.59
1885 26.58
1886 26.57
1887 26.57
1888 26.56
1889 26.55
1890 26.54
1891 26.54
1892 26.53
1893 26.52
1894 26.51
1895 26.5
1896 26.5
1897 26.49
1898 26.48
1899 26.47
1900 26.47
1901 26.46
1902 26.45
1903 26.44
1904 26.43
1905 26.43
1906 26.42
1907 26.41
1908 26.4
1909 26.39
1910 26.39
1911 26.38
1912 26.37
1913 26.36
1914 26.36
1915 26.35
1916 26.34
1917 26.33
1918 8.55
1919 26.32
1920 26.31
1921 26.3
1922 26.29
1923 26.29
1924 26.28
1925 26.27
1926 27.32
1927 28.39
1928 29.44
1929 30.49
1930 31.55
1931 32.61
1932 33.66
1933 34.71
1934 35.77
1935 36.81
1936 37.86
1937 38.92
1938 39.97
1939 41.01
1940 42.07
1941 43.11
1942 42.09
1943 36.21
1944 27.39
1945 44.01
1946 46.93
1947 48.87
1948 50.42
1949 51.48
1950 52.52
1951 52.7
1952 53.07
1953 53.45
1954 53.82
1955 54.19
1956 54.57
1957 54.94
1958 55.31
1959 55.69
1960 56.06
1961 56.43
1962 56.81
1963 57.18
1964 57.55
1965 57.92
1966 58.29
1967 58.67
1968 59.05
1969 59.43
1970 59.82
1971 60
1972 60.18
1973 60.37
1974 60.55
1975 60.72
1976 60.96
1977 61.21
1978 61.44
1979 61.68
1980 61.75
1981 61.8
1982 61.69
1983 62.1
1984 62.31
1985 62.52
1986 62.72
1987 62.91
1988 63.04
1989 63.19
1990 63.32
1991 63.49
1992 63.65
1993 63.86
1994 64.03
1995 64.26
1996 64.45
1997 64.61
1998 64.81
1999 65.01
2000 64.77
2001 65.43
2002 64.49
2003 65.66
2004 65.72
2005 65.62
2006 65.62
2007 65.62
2008 65.64
2009 65.55
2010 65.38
2011 65.44
2012 65.56
2013 65.62
2014 65.45
2015 65.33
2016 65.57
2017 65.69
2018 65.8