Year Years
1800 29.9
1801 29.9
1802 29.9
1803 29.9
1804 29.9
1805 29.9
1806 29.9
1807 29.9
1808 29.9
1809 29.9
1810 29.9
1811 29.9
1812 29.9
1813 29.9
1814 29.9
1815 29.9
1816 29.9
1817 29.9
1818 29.9
1819 29.9
1820 29.9
1821 29.9
1822 29.9
1823 29.9
1824 29.9
1825 29.9
1826 29.9
1827 29.9
1828 29.9
1829 29.9
1830 29.9
1831 29.9
1832 29.9
1833 29.9
1834 29.9
1835 29.9
1836 29.9
1837 29.9
1838 29.9
1839 29.9
1840 29.9
1841 29.9
1842 29.9
1843 29.9
1844 29.9
1845 29.9
1846 29.9
1847 29.9
1848 29.9
1849 29.9
1850 29.9
1851 29.9
1852 29.9
1853 29.9
1854 29.9
1855 29.9
1856 29.9
1857 29.9
1858 29.9
1859 29.9
1860 29.9
1861 29.9
1862 29.9
1863 29.9
1864 29.9
1865 29.9
1866 29.9
1867 29.9
1868 29.9
1869 29.9
1870 29.9
1871 29.93
1872 29.97
1873 30
1874 30.03
1875 30.07
1876 30.1
1877 30.13
1878 30.16
1879 30.2
1880 30.23
1881 30.26
1882 30.3
1883 30.33
1884 30.36
1885 30.4
1886 30.43
1887 30.46
1888 30.5
1889 30.53
1890 30.56
1891 30.6
1892 30.63
1893 30.66
1894 30.69
1895 30.73
1896 30.76
1897 30.79
1898 30.83
1899 30.86
1900 30.89
1901 30.93
1902 30.96
1903 30.99
1904 31.03
1905 31.06
1906 31.09
1907 31.13
1908 31.16
1909 31.19
1910 31.22
1911 31.26
1912 31.29
1913 31.32
1914 31.36
1915 31.39
1916 31.42
1917 31.46
1918 20.42
1919 31.52
1920 31.56
1921 31.59
1922 31.62
1923 31.66
1924 31.69
1925 31.72
1926 31.75
1927 31.79
1928 31.82
1929 31.85
1930 31.89
1931 31.92
1932 31.95
1933 31.99
1934 32.02
1935 32.05
1936 33.12
1937 34.18
1938 35.25
1939 36.32
1940 37.39
1941 38.46
1942 39.55
1943 40.63
1944 41.71
1945 42.79
1946 43.88
1947 44.96
1948 46.05
1949 47.14
1950 48.24
1951 48.74
1952 49.69
1953 50.63
1954 51.56
1955 52.49
1956 53.39
1957 54.3
1958 55.19
1959 56.07
1960 56.95
1961 57.81
1962 58.67
1963 59.5
1964 60.32
1965 61.13
1966 61.92
1967 62.7
1968 63.48
1969 64.22
1970 64.95
1971 65.34
1972 65.79
1973 66.31
1974 66.76
1975 67.14
1976 67.52
1977 67.94
1978 68.43
1979 68.05
1980 69.15
1981 69.47
1982 69.74
1983 69.92
1984 69.97
1985 69.97
1986 69.98
1987 69.96
1988 70.23
1989 70.61
1990 70.82
1991 71.11
1992 71.39
1993 71.6
1994 71.82
1995 72.09
1996 72.19
1997 72.53
1998 72.66
1999 73.01
2000 73.21
2001 73.39
2002 73.49
2003 73.52
2004 73.28
2005 73.48
2006 73.64
2007 73.91
2008 74.22
2009 74.43
2010 74.6
2011 74.73
2012 74.94
2013 75.12
2014 75.33
2015 75.52
2016 75.73
2017 75.92
2018 76.11