Year Total 1800 4.78 1801 4.777 1802 4.775 1803 4.772 1804 4.769 1805 4.767 1806 4.764 1807 4.761 1808 4.759 1809 4.756 1810 4.753 1811 4.751 1812 4.748 1813 4.745 1814 4.743 1815 4.74 1816 4.737 1817 4.735 1818 4.732 1819 4.729 1820 4.727 1821 4.724 1822 4.721 1823 4.719 1824 4.716 1825 4.713 1826 4.711 1827 4.708 1828 4.705 1829 4.703 1830 4.7 1831 4.694 1832 4.687 1833 4.681 1834 4.674 1835 4.668 1836 4.661 1837 4.655 1838 4.648 1839 4.642 1840 4.635 1841 4.629 1842 4.622 1843 4.616 1844 4.609 1845 4.603 1846 4.597 1847 4.59 1848 4.584 1849 4.577 1850 4.571 1851 4.7 1852 4.336 1853 4.243 1854 4.369 1855 4.105 1856 4.328 1857 4.328 1858 4.495 1859 4.762 1860 4.533 1861 4.465 1862 4.349 1863 4.556 1864 4.433 1865 4.36 1866 4.253 1867 4.316 1868 4.254 1869 4.326 1870 4.426 1871 4.248 1872 4.273 1873 4.358 1874 4.445 1875 4.155 1876 4.623 1877 4.484 1878 4.327 1879 4.445 1880 4.261 1881 4.287 1882 4.176 1883 4.025 1884 4.317 1885 4.005 1886 4.118 1887 3.992 1888 3.886 1889 3.892 1890 3.776 1891 3.94 1892 3.76 1893 3.91 1894 3.817 1895 3.859 1896 3.839 1897 3.971 1898 3.888 1899 4.07 1900 4.043 1901 4.221 1902 4.181 1903 4.141 1904 4.1 1905 4.06 1906 4.032 1907 4.004 1908 3.976 1909 3.948 1910 3.92 1911 3.746 1912 3.572 1913 3.398 1914 3.224 1915 3.05 1916 3.006 1917 2.962 1918 2.918 1919 2.874 1920 2.83 1921 2.778 1922 2.726 1923 2.674 1924 2.622 1925 2.57 1926 2.598 1927 2.626 1928 2.654 1929 2.682 1930 2.71 1931 2.538 1932 2.366 1933 2.194 1934 2.022 1935 1.85 1936 1.824 1937 1.798 1938 1.772 1939 1.746 1940 1.72 1941 1.728 1942 1.736 1943 1.744 1944 1.752 1945 1.76 1946 2.325 1947 2.89 1948 2.549 1949 2.209 1950 1.868 1951 1.896 1952 1.953 1953 2.008 1954 2.063 1955 2.117 1956 2.17 1957 2.221 1958 2.269 1959 2.312 1960 2.349 1961 2.375 1962 2.39 1963 2.39 1964 2.374 1965 2.342 1966 2.291 1967 2.223 1968 2.143 1969 2.054 1970 1.96 1971 1.867 1972 1.778 1973 1.697 1974 1.627 1975 1.57 1976 1.528 1977 1.497 1978 1.476 1979 1.463 1980 1.456 1981 1.452 1982 1.45 1983 1.448 1984 1.448 1985 1.45 1986 1.458 1987 1.473 1988 1.496 1989 1.526 1990 1.562 1991 1.6 1992 1.637 1993 1.669 1994 1.694 1995 1.711 1996 1.72 1997 1.721 1998 1.716 1999 1.707 2000 1.695 2001 1.68 2002 1.665 2003 1.65 2004 1.638 2005 1.629 2006 1.624 2007 1.623 2008 1.626 2009 1.631 2010 1.64 2011 1.65 2012 1.661 2013 1.671 2014 1.681 2015 1.69 2016 1.698 2017 1.705 2018 1.712 2019 1.718 2020 1.724 2021 1.73 2022 1.736 2023 1.742 2024 1.747 2030 1.775 2040 1.809 2050 1.831 2070 1.859 2080 1.868 2099 1.876