Year Years
1800 32
1801 32
1802 32
1803 32
1804 32
1805 32
1806 32
1807 32
1808 32
1809 32
1810 32
1811 32
1812 32
1813 32
1814 32
1815 32
1816 32
1817 32
1818 32
1819 32
1820 32
1821 32
1822 32
1823 32
1824 32
1825 32
1826 32
1827 32
1828 32
1829 32
1830 32
1831 32
1832 32
1833 32
1834 32
1835 32
1836 32
1837 32
1838 32
1839 32
1840 32
1841 32
1842 32
1843 32
1844 32
1845 32
1846 32
1847 32
1848 32
1849 32
1850 32
1851 32
1852 32
1853 32
1854 32
1855 32
1856 32
1857 32
1858 32
1859 32
1860 32
1861 32
1862 32
1863 32
1864 32
1865 32
1866 32
1867 32
1868 32
1869 32
1870 32
1871 32.03
1872 32.07
1873 32.1
1874 32.13
1875 32.17
1876 32.2
1877 32.23
1878 32.27
1879 32.3
1880 32.33
1881 32.36
1882 32.4
1883 32.43
1884 32.46
1885 32.5
1886 32.53
1887 32.56
1888 32.6
1889 32.63
1890 32.66
1891 32.7
1892 32.73
1893 32.76
1894 32.8
1895 32.83
1896 32.86
1897 32.9
1898 32.93
1899 32.96
1900 32.99
1901 33.03
1902 33.06
1903 33.09
1904 33.13
1905 33.16
1906 33.19
1907 33.23
1908 33.26
1909 33.29
1910 33.33
1911 33.36
1912 33.39
1913 33.43
1914 33.46
1915 33.49
1916 33.53
1917 33.56
1918 13
1919 33.62
1920 33.66
1921 33.69
1922 33.72
1923 33.76
1924 33.79
1925 33.82
1926 33.86
1927 33.89
1928 33.92
1929 33.96
1930 33.99
1931 34.02
1932 34.06
1933 34.09
1934 34.12
1935 34.16
1936 34.19
1937 34.22
1938 34.25
1939 34.29
1940 34.32
1941 34.35
1942 34.39
1943 34.42
1944 34.45
1945 34.49
1946 35.7
1947 36.91
1948 38.12
1949 39.34
1950 40.55
1951 40.89
1952 41.53
1953 42.2
1954 42.91
1955 43.63
1956 44.38
1957 45.15
1958 45.94
1959 46.75
1960 47.55
1961 48.33
1962 49.11
1963 49.85
1964 50.57
1965 51.24
1966 51.87
1967 52.48
1968 53.08
1969 53.65
1970 54.22
1971 54.49
1972 54.8
1973 55
1974 55.28
1975 54.76
1976 55.12
1977 55.47
1978 55.76
1979 56.83
1980 57.16
1981 57.51
1982 57.81
1983 58.1
1984 58.35
1985 58.62
1986 59.27
1987 59.61
1988 60.25
1989 59.99
1990 59.96
1991 60.63
1992 60.89
1993 61.17
1994 61.21
1995 61.62
1996 61.77
1997 62.33
1998 62.7
1999 63.24
2000 63.7
2001 64.03
2002 64.55
2003 65
2004 65.35
2005 65.69
2006 66.41
2007 66.91
2008 67.38
2009 67.79
2010 68.23
2011 68.61
2012 68.96
2013 69.28
2014 69.64
2015 69.95
2016 70.25
2017 70.41
2018 70.57