Year Years
1800 29.2
1801 29.2
1802 29.2
1803 29.2
1804 29.2
1805 29.2
1806 29.2
1807 29.2
1808 29.2
1809 29.2
1810 29.2
1811 29.2
1812 29.2
1813 29.2
1814 29.2
1815 29.2
1816 29.2
1817 29.2
1818 29.2
1819 29.2
1820 29.2
1821 29.2
1822 29.2
1823 29.2
1824 29.2
1825 29.2
1826 29.2
1827 29.2
1828 29.2
1829 29.2
1830 29.2
1831 29.2
1832 29.2
1833 29.2
1834 29.2
1835 29.2
1836 29.2
1837 29.2
1838 29.2
1839 29.2
1840 29.2
1841 29.2
1842 29.2
1843 29.2
1844 29.2
1845 29.2
1846 29.2
1847 29.2
1848 29.2
1849 29.2
1850 29.2
1851 29.2
1852 29.2
1853 29.2
1854 29.2
1855 29.2
1856 29.2
1857 29.2
1858 29.2
1859 29.2
1860 29.2
1861 29.2
1862 29.2
1863 29.2
1864 29.2
1865 29.2
1866 29.2
1867 29.2
1868 29.2
1869 29.2
1870 29.2
1871 29.24
1872 29.28
1873 29.32
1874 29.36
1875 29.4
1876 29.44
1877 29.48
1878 29.52
1879 29.56
1880 29.59
1881 29.63
1882 29.67
1883 29.71
1884 29.75
1885 29.79
1886 29.83
1887 29.87
1888 29.91
1889 29.95
1890 29.99
1891 30.03
1892 30.07
1893 30.11
1894 30.15
1895 30.19
1896 30.23
1897 30.27
1898 30.3
1899 30.34
1900 30.38
1901 30.42
1902 30.46
1903 30.5
1904 30.54
1905 30.58
1906 30.62
1907 30.66
1908 30.7
1909 30.74
1910 30.78
1911 30.82
1912 30.86
1913 30.9
1914 30.94
1915 30.98
1916 31.02
1917 31.05
1918 12.02
1919 31.13
1920 31.17
1921 31.21
1922 31.25
1923 31.29
1924 31.33
1925 31.37
1926 31.41
1927 31.45
1928 31.49
1929 31.53
1930 31.57
1931 31.61
1932 31.65
1933 31.69
1934 31.73
1935 31.76
1936 31.8
1937 31.84
1938 31.88
1939 31.92
1940 31.96
1941 32
1942 32.04
1943 32.08
1944 32.12
1945 32.16
1946 32.38
1947 32.58
1948 32.8
1949 33.01
1950 33.22
1951 33.53
1952 34.11
1953 34.68
1954 35.25
1955 35.82
1956 36.38
1957 36.94
1958 37.49
1959 38.06
1960 38.62
1961 39.19
1962 39.77
1963 40.36
1964 40.94
1965 41.55
1966 42.13
1967 42.7
1968 43.27
1969 43.82
1970 44.38
1971 44.54
1972 45.03
1973 45.29
1974 45.69
1975 46.07
1976 46.42
1977 46.78
1978 47.27
1979 47.77
1980 48.21
1981 48.61
1982 48.95
1983 49.24
1984 49.65
1985 50.08
1986 50.25
1987 50.32
1988 50.22
1989 50.58
1990 50.61
1991 50.68
1992 50.62
1993 50.66
1994 50.68
1995 50.68
1996 50.39
1997 50.86
1998 51.35
1999 51.79
2000 52.16
2001 52.64
2002 53.12
2003 53.8
2004 54.38
2005 55.06
2006 55.61
2007 56.18
2008 56.85
2009 57.4
2010 57.89
2011 58.43
2012 58.89
2013 59.37
2014 59.83
2015 60.34
2016 60.79
2017 61.2
2018 61.6