Year Years
1800 31
1801 31
1802 31
1803 31
1804 31
1805 31
1806 31
1807 31
1808 31
1809 31
1810 31
1811 31
1812 31
1813 31
1814 31
1815 31
1816 31
1817 31
1818 31
1819 31
1820 31
1821 31
1822 31
1823 31
1824 31
1825 31
1826 31
1827 31
1828 31
1829 31
1830 31
1831 31
1832 31
1833 31
1834 31
1835 31
1836 31
1837 31
1838 31
1839 31
1840 31
1841 31
1842 31
1843 31
1844 31
1845 31
1846 31
1847 31
1848 31
1849 31
1850 31
1851 31
1852 31
1853 31
1854 31
1855 31
1856 31
1857 31
1858 31
1859 31
1860 31
1861 31
1862 31
1863 31
1864 31
1865 31
1866 31
1867 31
1868 31
1869 31
1870 31
1871 31.04
1872 31.07
1873 31.11
1874 31.14
1875 31.18
1876 31.21
1877 31.25
1878 31.28
1879 31.32
1880 31.35
1881 31.39
1882 31.42
1883 31.46
1884 31.5
1885 31.53
1886 31.57
1887 31.6
1888 31.64
1889 31.67
1890 31.71
1891 31.74
1892 31.78
1893 31.81
1894 31.85
1895 31.88
1896 31.92
1897 31.95
1898 31.99
1899 32.03
1900 32.06
1901 32.1
1902 32.13
1903 32.17
1904 32.2
1905 32.24
1906 32.27
1907 32.31
1908 32.34
1909 32.38
1910 32.41
1911 32.45
1912 32.49
1913 32.52
1914 32.56
1915 32.59
1916 32.63
1917 32.66
1918 12.65
1919 32.73
1920 32.77
1921 32.8
1922 32.84
1923 32.87
1924 32.91
1925 32.94
1926 32.98
1927 33.02
1928 33.05
1929 33.09
1930 33.12
1931 33.16
1932 33.19
1933 33.23
1934 33.26
1935 33.3
1936 33.33
1937 33.37
1938 33.4
1939 33.44
1940 33.48
1941 33.51
1942 33.55
1943 33.58
1944 33.62
1945 33.96
1946 34.31
1947 34.65
1948 34.99
1949 35.33
1950 35.68
1951 36.01
1952 36.6
1953 37.19
1954 37.77
1955 38.34
1956 38.89
1957 39.45
1958 40
1959 40.55
1960 41.09
1961 41.64
1962 42.19
1963 42.76
1964 43.34
1965 43.94
1966 44.56
1967 45.2
1968 45.86
1969 46.53
1970 47.21
1971 47.59
1972 48.2
1973 48.74
1974 49.24
1975 49.57
1976 49.96
1977 50.3
1978 50.66
1979 51.06
1980 51.53
1981 52
1982 52.49
1983 52.96
1984 53.31
1985 53.72
1986 54.27
1987 54.78
1988 55.21
1989 55.34
1990 55.46
1991 55.61
1992 55.99
1993 56.35
1994 56.36
1995 56.46
1996 56.43
1997 56.85
1998 57.07
1999 57.34
2000 57.56
2001 57.76
2002 58.24
2003 58.59
2004 59.02
2005 59.47
2006 59.86
2007 60.27
2008 60.78
2009 61.37
2010 61.82
2011 62.24
2012 62.63
2013 63.02
2014 63.41
2015 63.9
2016 64.43
2017 64.71
2018 64.98