Year Years
1800 25.99
1801 25.99
1802 25.99
1803 25.99
1804 25.99
1805 25.99
1806 25.99
1807 25.99
1808 25.99
1809 25.99
1810 25.99
1811 25.99
1812 25.99
1813 25.99
1814 25.99
1815 25.99
1816 25.99
1817 25.99
1818 25.99
1819 25.99
1820 25.99
1821 25.99
1822 25.99
1823 25.99
1824 25.99
1825 25.99
1826 25.99
1827 25.99
1828 25.99
1829 25.99
1830 25.99
1831 25.99
1832 25.99
1833 25.99
1834 25.99
1835 25.99
1836 25.99
1837 25.99
1838 25.99
1839 25.99
1840 25.99
1841 25.99
1842 25.99
1843 25.99
1844 25.99
1845 25.99
1846 25.99
1847 25.99
1848 25.99
1849 25.99
1850 25.99
1851 25.99
1852 25.99
1853 25.99
1854 25.99
1855 25.99
1856 25.99
1857 25.99
1858 25.99
1859 25.99
1860 25.99
1861 25.99
1862 25.99
1863 25.99
1864 25.99
1865 25.99
1866 25.99
1867 25.99
1868 25.99
1869 25.99
1870 25.99
1871 25.99
1872 25.99
1873 25.99
1874 25.98
1875 25.98
1876 25.98
1877 25.98
1878 25.98
1879 25.98
1880 25.98
1881 25.98
1882 25.97
1883 25.97
1884 25.97
1885 25.97
1886 25.97
1887 25.97
1888 25.97
1889 25.97
1890 25.96
1891 25.96
1892 25.96
1893 25.96
1894 25.96
1895 25.96
1896 25.96
1897 25.96
1898 25.95
1899 25.95
1900 25.95
1901 25.95
1902 25.95
1903 25.95
1904 25.95
1905 25.95
1906 25.94
1907 25.94
1908 25.94
1909 25.94
1910 25.94
1911 25.94
1912 25.94
1913 25.94
1914 25.93
1915 25.93
1916 25.93
1917 25.93
1918 16.81
1919 25.93
1920 25.93
1921 25.92
1922 26.74
1923 27.57
1924 28.39
1925 29.22
1926 30.04
1927 30.86
1928 31.69
1929 32.52
1930 33.33
1931 34.16
1932 34.98
1933 35.81
1934 36.62
1935 37.45
1936 38.28
1937 39.1
1938 39.92
1939 40.74
1940 41.57
1941 42.39
1942 43.22
1943 44.03
1944 44.86
1945 45.68
1946 46.51
1947 47.32
1948 48.15
1949 48.97
1950 49.79
1951 50.01
1952 50.5
1953 51.09
1954 51.8
1955 52.6
1956 53.49
1957 54.49
1958 55.55
1959 56.65
1960 57.77
1961 58.88
1962 59.91
1963 60.85
1964 61.67
1965 62.39
1966 62.99
1967 63.52
1968 63.98
1969 64.41
1970 64.78
1971 65.02
1972 65.46
1973 65.91
1974 66.26
1975 66.61
1976 67.11
1977 67.57
1978 68.1
1979 68.65
1980 68.97
1981 69.37
1982 69.77
1983 70.07
1984 70.19
1985 70.36
1986 70.48
1987 70.52
1988 70.59
1989 70.62
1990 70.63
1991 70.62
1992 70.6
1993 70.57
1994 70.49
1995 70.43
1996 70.33
1997 70.55
1998 70.57
1999 70.4
2000 70.22
2001 70.55
2002 70.51
2003 70.86
2004 70.98
2005 71.17
2006 71.29
2007 71.43
2008 71.6
2009 71.67
2010 71.64
2011 71.65
2012 71.6
2013 71.25
2014 71.46
2015 71.63
2016 71.8
2017 71.92
2018 72.03