Year Years
1800 34.42
1801 34.42
1802 34.42
1803 34.42
1804 34.42
1805 34.42
1806 34.42
1807 34.42
1808 34.42
1809 34.42
1810 34.42
1811 34.42
1812 34.42
1813 34.42
1814 34.42
1815 34.42
1816 34.42
1817 34.42
1818 34.42
1819 34.42
1820 34.42
1821 34.42
1822 34.42
1823 34.42
1824 34.42
1825 34.42
1826 34.42
1827 34.42
1828 34.42
1829 34.42
1830 34.42
1831 34.42
1832 34.42
1833 34.42
1834 34.42
1835 34.42
1836 34.42
1837 34.42
1838 34.42
1839 34.42
1840 34.42
1841 34.42
1842 34.42
1843 34.42
1844 34.42
1845 34.42
1846 34.42
1847 34.42
1848 34.42
1849 34.42
1850 34.42
1851 34.42
1852 34.42
1853 34.42
1854 34.42
1855 34.42
1856 34.42
1857 34.42
1858 34.42
1859 34.42
1860 34.42
1861 34.42
1862 34.42
1863 34.42
1864 34.42
1865 34.42
1866 34.42
1867 34.42
1868 34.42
1869 34.42
1870 34.42
1871 34.42
1872 34.42
1873 34.42
1874 34.42
1875 34.42
1876 34.42
1877 34.42
1878 34.42
1879 34.42
1880 34.42
1881 34.42
1882 34.42
1883 34.42
1884 34.42
1885 34.42
1886 34.42
1887 34.42
1888 34.42
1889 34.42
1890 34.42
1891 34.42
1892 34.42
1893 34.42
1894 34.42
1895 34.42
1896 34.42
1897 34.42
1898 34.42
1899 34.42
1900 34.42
1901 34.42
1902 34.42
1903 34.42
1904 34.42
1905 34.42
1906 34.42
1907 34.42
1908 34.42
1909 34.42
1910 34.42
1911 34.42
1912 34.42
1913 34.42
1914 34.42
1915 34.42
1916 34.42
1917 34.42
1918 22.32
1919 34.42
1920 34.42
1921 34.42
1922 35.25
1923 36.07
1924 36.9
1925 37.73
1926 38.56
1927 39.38
1928 40.21
1929 41.04
1930 41.87
1931 42.69
1932 43.52
1933 44.35
1934 45.18
1935 46.01
1936 46.83
1937 47.66
1938 48.49
1939 49.32
1940 50.14
1941 50.97
1942 51.8
1943 52.63
1944 53.45
1945 54.28
1946 55.11
1947 55.94
1948 56.76
1949 57.59
1950 58.42
1951 58.96
1952 60.01
1953 60.98
1954 61.87
1955 62.69
1956 63.42
1957 64.09
1958 64.68
1959 65.2
1960 65.66
1961 66.07
1962 66.44
1963 66.79
1964 67.11
1965 67.44
1966 67.76
1967 68.1
1968 68.44
1969 68.78
1970 69.14
1971 69.5
1972 69.85
1973 70.19
1974 70.52
1975 70.83
1976 71.14
1977 71.44
1978 71.74
1979 72.02
1980 72.29
1981 72.54
1982 72.75
1983 72.93
1984 73.07
1985 73.18
1986 73.26
1987 73.33
1988 73.38
1989 73.43
1990 73.47
1991 73.51
1992 73.54
1993 73.57
1994 73.6
1995 73.62
1996 73.65
1997 73.67
1998 73.7
1999 73.73
2000 73.78
2001 73.85
2002 73.94
2003 74.05
2004 74.18
2005 74.32
2006 74.47
2007 74.62
2008 74.77
2009 74.92
2010 75.06
2011 75.19
2012 75.32
2013 75.46
2014 75.59
2015 75.72
2016 75.86
2017 76
2018 76.14