Year Years 1800 33.15 1801 33.15 1802 33.15 1803 33.15 1804 33.15 1805 33.15 1806 33.15 1807 33.15 1808 33.15 1809 33.15 1810 33.15 1811 33.15 1812 33.15 1813 33.15 1814 33.15 1815 33.15 1816 33.15 1817 33.15 1818 33.15 1819 33.15 1820 33.15 1821 33.15 1822 33.15 1823 33.15 1824 33.15 1825 33.15 1826 33.15 1827 33.15 1828 33.15 1829 33.15 1830 33.15 1831 33.15 1832 33.15 1833 33.15 1834 33.15 1835 33.15 1836 33.15 1837 33.15 1838 33.15 1839 33.15 1840 33.15 1841 33.15 1842 33.15 1843 33.15 1844 33.15 1845 33.15 1846 33.15 1847 33.15 1848 33.15 1849 33.15 1850 33.15 1851 33.15 1852 33.15 1853 33.15 1854 33.15 1855 33.15 1856 33.15 1857 33.15 1858 33.15 1859 33.15 1860 33.15 1861 33.15 1862 33.15 1863 33.15 1864 33.15 1865 33.15 1866 33.15 1867 33.15 1868 33.15 1869 33.15 1870 33.15 1871 33.14 1872 33.12 1873 33.11 1874 33.1 1875 33.09 1876 33.07 1877 33.06 1878 33.05 1879 33.03 1880 33.02 1881 33.01 1882 33 1883 32.98 1884 32.97 1885 32.96 1886 32.95 1887 32.93 1888 32.92 1889 32.91 1890 32.89 1891 32.88 1892 32.87 1893 32.86 1894 32.84 1895 32.83 1896 32.82 1897 32.8 1898 32.79 1899 32.78 1900 32.77 1901 32.75 1902 32.74 1903 32.73 1904 32.72 1905 32.7 1906 32.69 1907 32.68 1908 32.66 1909 32.65 1910 32.64 1911 32.63 1912 32.61 1913 32.6 1914 32.59 1915 32.57 1916 32.56 1917 32.55 1918 30.63 1919 32.52 1920 32.51 1921 32.97 1922 33.44 1923 33.9 1924 34.37 1925 34.83 1926 35.29 1927 35.76 1928 36.22 1929 36.69 1930 37.14 1931 37.6 1932 38.07 1933 39.09 1934 40.12 1935 41.13 1936 42.15 1937 43.18 1938 44.19 1939 45.21 1940 46.23 1941 39.39 1942 37.92 1943 34.02 1944 24.19 1945 43.21 1946 49.51 1947 20.38 1948 53.35 1949 54.78 1950 56.36 1951 56.56 1952 56.97 1953 57.37 1954 57.76 1955 58.13 1956 58.49 1957 58.84 1958 59.18 1959 59.52 1960 59.85 1961 60.18 1962 60.52 1963 60.86 1964 61.2 1965 61.52 1966 61.81 1967 62.07 1968 62.28 1969 62.43 1970 62.54 1971 62.83 1972 63.1 1973 63.38 1974 63.66 1975 63.9 1976 64.14 1977 64.36 1978 64.57 1979 64.75 1980 64.85 1981 65.01 1982 65.13 1983 65.52 1984 65.78 1985 65.38 1986 66.93 1987 67.57 1988 67.5 1989 67.45 1990 67.19 1991 66.45 1992 66.57 1993 66.49 1994 64.98 1995 64.62 1996 65.33 1997 67.05 1998 67.66 1999 67.5 2000 67.58 2001 68.14 2002 68.49 2003 68.75 2004 69.13 2005 68.54 2006 68.92 2007 69.2 2008 69.58 2009 69.88 2010 69.74 2011 71.47 2012 71.61 2013 72.48 2014 72.19 2015 72.08 2016 72.2 2017 72.31 2018 72.41