Year Years
1800 26.1
1801 26.1
1802 26.1
1803 26.1
1804 26.1
1805 26.1
1806 26.1
1807 26.1
1808 26.1
1809 26.1
1810 26.1
1811 26.1
1812 26.1
1813 26.1
1814 26.1
1815 26.1
1816 26.1
1817 26.1
1818 26.1
1819 26.1
1820 26.1
1821 26.1
1822 26.1
1823 26.1
1824 26.1
1825 26.1
1826 26.1
1827 26.1
1828 26.1
1829 26.1
1830 26.1
1831 26.1
1832 26.1
1833 26.1
1834 26.1
1835 26.1
1836 26.1
1837 26.1
1838 26.1
1839 26.1
1840 26.1
1841 26.1
1842 26.1
1843 26.1
1844 26.1
1845 26.1
1846 26.1
1847 26.1
1848 26.1
1849 26.1
1850 26.1
1851 26.1
1852 26.1
1853 26.1
1854 26.1
1855 26.1
1856 26.1
1857 26.1
1858 26.1
1859 26.1
1860 26.1
1861 26.1
1862 26.1
1863 26.1
1864 26.1
1865 26.1
1866 26.1
1867 26.1
1868 26.1
1869 26.1
1870 26.1
1871 26.12
1872 26.14
1873 26.16
1874 26.18
1875 1
1876 26.22
1877 26.24
1878 26.26
1879 26.28
1880 26.3
1881 26.32
1882 26.34
1883 26.36
1884 26.38
1885 26.4
1886 26.42
1887 26.44
1888 26.46
1889 26.48
1890 26.5
1891 26.52
1892 26.54
1893 26.56
1894 26.58
1895 26.6
1896 26.62
1897 26.64
1898 26.66
1899 26.69
1900 26.71
1901 26.73
1902 26.75
1903 26.77
1904 26.79
1905 26.81
1906 26.83
1907 26.85
1908 26.87
1909 26.89
1910 26.91
1911 26.93
1912 26.95
1913 26.97
1914 26.99
1915 27.01
1916 27.03
1917 27.05
1918 6.87
1919 27.09
1920 27.11
1921 27.13
1922 27.15
1923 27.17
1924 27.19
1925 27.21
1926 28.27
1927 29.34
1928 30.4
1929 31.47
1930 32.54
1931 33.61
1932 34.69
1933 35.76
1934 36.84
1935 37.91
1936 38.99
1937 40.07
1938 41.16
1939 42.25
1940 43.33
1941 44.42
1942 45.51
1943 46.6
1944 47.69
1945 48.78
1946 49.88
1947 50.97
1948 52.07
1949 53.17
1950 54.27
1951 54.61
1952 55.24
1953 55.86
1954 56.45
1955 57.04
1956 57.61
1957 58.16
1958 58.7
1959 59.23
1960 59.75
1961 60.25
1962 60.75
1963 61.24
1964 61.73
1965 62.21
1966 62.68
1967 63.14
1968 63.6
1969 64.05
1970 64.49
1971 64.19
1972 64.19
1973 64.01
1974 64.26
1975 64.28
1976 64.81
1977 65.14
1978 65.1
1979 65.06
1980 64.81
1981 64.7
1982 65.03
1983 65.42
1984 65.73
1985 65.57
1986 65.55
1987 65.64
1988 65.52
1989 65.39
1990 65.39
1991 65.29
1992 65.17
1993 64.9
1994 64.79
1995 64.63
1996 64.46
1997 64.21
1998 64.22
1999 64.13
2000 64.3
2001 64.5
2002 64.66
2003 64.73
2004 64.83
2005 64.89
2006 64.87
2007 64.87
2008 64.9
2009 64.99
2010 65.28
2011 65.46
2012 65.4
2013 65.46
2014 65.46
2015 65.46
2016 65.47
2017 65.61
2018 65.75