Year Years
1800 26
1801 26
1802 26
1803 26
1804 26
1805 26
1806 26
1807 26
1808 26
1809 26
1810 26
1811 26
1812 26
1813 26
1814 26
1815 26
1816 26
1817 26
1818 26
1819 26
1820 26
1821 26
1822 26
1823 26
1824 26
1825 26
1826 26
1827 26
1828 26
1829 26
1830 26
1831 26
1832 26
1833 26
1834 26
1835 26
1836 26
1837 26
1838 26
1839 26
1840 26
1841 26
1842 26
1843 26
1844 26
1845 26
1846 26
1847 26
1848 26
1849 26
1850 26
1851 26
1852 26
1853 26
1854 26
1855 26
1856 26
1857 26
1858 26
1859 26
1860 26
1861 26
1862 26
1863 26
1864 26
1865 26
1866 26
1867 26
1868 26
1869 26
1870 26
1871 26.01
1872 26.03
1873 26.04
1874 26.06
1875 26.07
1876 26.09
1877 26.1
1878 26.12
1879 26.13
1880 26.15
1881 26.16
1882 26.18
1883 26.19
1884 26.21
1885 26.22
1886 26.24
1887 26.25
1888 26.26
1889 26.28
1890 26.29
1891 26.31
1892 26.32
1893 26.34
1894 26.35
1895 26.37
1896 26.38
1897 26.4
1898 26.41
1899 26.43
1900 26.44
1901 26.46
1902 26.47
1903 26.49
1904 26.5
1905 26.51
1906 26.53
1907 26.54
1908 26.56
1909 26.57
1910 26.59
1911 26.6
1912 26.62
1913 26.63
1914 26.65
1915 26.66
1916 26.68
1917 26.69
1918 22.13
1919 26.72
1920 26.74
1921 26.75
1922 26.76
1923 26.78
1924 26.79
1925 26.81
1926 26.82
1927 26.84
1928 26.85
1929 26.87
1930 26.88
1931 26.9
1932 26.91
1933 26.93
1934 26.94
1935 26.96
1936 26.97
1937 26.99
1938 27
1939 27.01
1940 29.42
1941 31.83
1942 34.23
1943 36.64
1944 39.06
1945 41.48
1946 43.89
1947 46.31
1948 48.74
1949 51.17
1950 53.59
1951 54.19
1952 55.35
1953 56.47
1954 57.54
1955 58.58
1956 59.57
1957 60.54
1958 61.45
1959 62.33
1960 63.16
1961 63.96
1962 64.72
1963 65.44
1964 66.12
1965 66.76
1966 67.39
1967 67.97
1968 68.53
1969 69.07
1970 69.58
1971 70.36
1972 70.29
1973 69.94
1974 69.96
1975 70.05
1976 70.23
1977 70
1978 70.63
1979 71.22
1980 71.91
1981 72.4
1982 72.56
1983 73.06
1984 73.46
1985 73.89
1986 74.31
1987 74.73
1988 75
1989 75.69
1990 75.63
1991 77.2
1992 78.11
1993 77.52
1994 76.93
1995 76.2
1996 75.85
1997 75.65
1998 75.73
1999 76.18
2000 76.46
2001 76.47
2002 76.9
2003 77.16
2004 77.07
2005 77.03
2006 77.02
2007 77.11
2008 77.19
2009 77.47
2010 78.2
2011 78.87
2012 79.3
2013 79.72
2014 79.86
2015 79.79
2016 79.72
2017 79.84
2018 79.96