Year Total 1800 5.25 1801 5.25 1802 5.25 1803 5.25 1804 5.25 1805 5.25 1806 5.25 1807 5.25 1808 5.25 1809 5.25 1810 5.25 1811 5.25 1812 5.25 1813 5.25 1814 5.25 1815 5.25 1816 5.25 1817 5.25 1818 5.25 1819 5.25 1820 5.25 1821 5.25 1822 5.25 1823 5.25 1824 5.25 1825 5.25 1826 5.25 1827 5.25 1828 5.25 1829 5.25 1830 5.25 1831 5.25 1832 5.25 1833 5.25 1834 5.25 1835 5.25 1836 5.25 1837 5.25 1838 5.25 1839 5.25 1840 5.25 1841 5.25 1842 5.25 1843 5.25 1844 5.25 1845 5.25 1846 5.25 1847 5.25 1848 5.25 1849 5.25 1850 5.25 1851 5.25 1852 5.25 1853 5.25 1854 5.25 1855 5.25 1856 5.07 1857 5.29 1858 5.12 1859 4.96 1860 5.06 1861 5.16 1862 4.84 1863 4.73 1864 5.16 1865 5.51 1866 5.75 1867 5.65 1868 5.65 1869 5.61 1870 5.67 1871 5.45 1872 5.29 1873 5.22 1874 5.37 1875 5.39 1876 5.59 1877 5.53 1878 5.62 1879 5.4 1880 5.46 1881 5.09 1882 5 1883 4.86 1884 4.81 1885 4.6 1886 4.44 1887 4.3 1888 4.18 1889 4.03 1890 3.94 1891 3.89 1892 3.73 1893 3.69 1894 3.66 1895 3.59 1896 3.53 1897 3.48 1898 3.45 1899 3.37 1900 3.43 1901 3.53 1902 3.47 1903 3.57 1904 3.61 1905 3.65 1906 3.63 1907 3.66 1908 3.68 1909 3.66 1910 3.51 1911 3.48 1912 3.55 1913 3.5 1914 3.48 1915 3.39 1916 3.48 1917 3.44 1918 3.14 1919 2.87 1920 3.36 1921 3.13 1922 3.11 1923 2.94 1924 2.89 1925 2.84 1926 2.82 1927 2.72 1928 2.62 1929 2.55 1930 2.52 1931 2.56 1932 2.42 1933 2.37 1934 2.36 1935 2.33 1936 2.42 1937 2.53 1938 2.58 1939 2.71 1940 3.03 1941 3.22 1942 3.1 1943 2.85 1944 3.08 1945 3.29 1946 3.63 1947 3.71 1948 3.59 1949 3.5 1950 3.47 1951 3.27 1952 3.32 1953 3.39 1954 3.46 1955 3.49 1956 3.47 1957 3.51 1958 3.56 1959 3.55 1960 3.54 1961 3.61 1962 3.51 1963 3.41 1964 3.22 1965 3.05 1966 3.13 1967 3 1968 3.02 1969 3.01 1970 2.95 1971 3.02 1972 2.9 1973 2.73 1974 2.61 1975 2.46 1976 2.37 1977 2.32 1978 2.19 1979 2.24 1980 2.15 1981 2.16 1982 2.1 1983 2.1 1984 2.12 1985 2.14 1986 2.16 1987 2.24 1988 2.32 1989 2.33 1990 2.4 1991 2.36 1992 2.31 1993 2.22 1994 2.13 1995 2.11 1996 2.07 1997 2.05 1998 1.96 1999 2 2000 1.98 2001 1.96 2002 1.95 2003 1.98 2004 2.02 2005 2.05 2006 2.09 2007 2.11 2008 2.12 2009 2.13 2010 2.12 2011 2.1 2012 2.07 2013 2.05 2014 2.03 2015 2.01 2016 1.99 2017 1.98 2018 1.97