Year Years
1800 24.3
1801 24.3
1802 24.3
1803 24.3
1804 24.3
1805 24.3
1806 24.3
1807 24.3
1808 24.3
1809 24.3
1810 24.3
1811 24.3
1812 24.3
1813 24.3
1814 24.3
1815 24.3
1816 24.3
1817 24.3
1818 24.3
1819 24.3
1820 24.3
1821 24.3
1822 24.3
1823 24.3
1824 24.3
1825 24.3
1826 24.3
1827 24.3
1828 24.3
1829 24.3
1830 24.3
1831 24.3
1832 24.3
1833 24.3
1834 24.3
1835 24.3
1836 24.3
1837 24.3
1838 24.3
1839 24.3
1840 24.3
1841 24.3
1842 24.3
1843 24.3
1844 24.3
1845 24.3
1846 24.3
1847 24.3
1848 24.3
1849 24.3
1850 24.3
1851 24.3
1852 24.3
1853 24.3
1854 24.3
1855 24.3
1856 24.3
1857 24.3
1858 24.3
1859 24.3
1860 24.3
1861 24.3
1862 24.3
1863 24.3
1864 24.3
1865 24.3
1866 24.3
1867 24.3
1868 24.3
1869 24.3
1870 24.3
1871 24.32
1872 24.34
1873 24.36
1874 24.39
1875 24.41
1876 24.43
1877 24.45
1878 24.47
1879 24.49
1880 24.51
1881 24.54
1882 24.56
1883 24.58
1884 24.6
1885 24.62
1886 24.64
1887 24.66
1888 24.68
1889 24.71
1890 24.73
1891 24.75
1892 24.77
1893 24.79
1894 24.81
1895 24.83
1896 24.86
1897 24.88
1898 24.9
1899 24.92
1900 24.94
1901 24.96
1902 24.98
1903 25.01
1904 25.03
1905 25.05
1906 25.07
1907 25.09
1908 25.11
1909 25.13
1910 25.16
1911 25.18
1912 25.2
1913 25.22
1914 25.24
1915 25.26
1916 25.28
1917 25.31
1918 25.33
1919 25.35
1920 25.37
1921 25.39
1922 25.41
1923 25.43
1924 25.45
1925 25.48
1926 25.5
1927 25.52
1928 25.54
1929 25.56
1930 25.58
1931 25.6
1932 25.63
1933 25.65
1934 25.67
1935 26.78
1936 27.89
1937 28.99
1938 30.11
1939 31.23
1940 32.35
1941 33.47
1942 34.58
1943 35.71
1944 36.83
1945 37.96
1946 39.09
1947 40.21
1948 41.35
1949 42.48
1950 43.62
1951 43.98
1952 44.65
1953 45.33
1954 46.01
1955 46.69
1956 47.37
1957 48.06
1958 48.74
1959 49.43
1960 50.12
1961 50.81
1962 51.51
1963 52.2
1964 52.89
1965 53.58
1966 54.28
1967 54.96
1968 55.64
1969 56.31
1970 56.98
1971 57.23
1972 57.47
1973 57.82
1974 58.39
1975 58.82
1976 59.22
1977 59.53
1978 59.91
1979 60.25
1980 60.44
1981 60.61
1982 60.78
1983 60.98
1984 61.19
1985 61.38
1986 61.52
1987 60.93
1988 61.68
1989 61.74
1990 61.86
1991 61.97
1992 62.06
1993 62.12
1994 62.2
1995 62.25
1996 62.29
1997 61.16
1998 62.36
1999 61.86
2000 62.39
2001 62.36
2002 62.29
2003 62.25
2004 62.24
2005 62.25
2006 62.36
2007 62.49
2008 62.66
2009 62.82
2010 63.02
2011 63.18
2012 63.34
2013 63.48
2014 63.51
2015 63.64
2016 63.95
2017 64.13
2018 64.3