Year Total 1800 4.85 1801 4.846 1802 4.841 1803 4.837 1804 4.833 1805 4.828 1806 4.824 1807 4.819 1808 4.815 1809 4.811 1810 4.806 1811 4.802 1812 4.798 1813 4.793 1814 4.789 1815 4.785 1816 4.78 1817 4.776 1818 4.771 1819 4.767 1820 4.763 1821 4.758 1822 4.754 1823 4.75 1824 4.745 1825 4.741 1826 4.736 1827 4.732 1828 4.728 1829 4.723 1830 4.719 1831 4.769 1832 4.818 1833 4.868 1834 4.918 1835 4.967 1836 4.973 1837 4.979 1838 4.985 1839 4.991 1840 4.997 1841 4.938 1842 4.88 1843 4.821 1844 4.763 1845 4.704 1846 4.64 1847 4.576 1848 4.512 1849 4.447 1850 4.383 1851 4.315 1852 4.248 1853 4.18 1854 4.246 1855 4.312 1856 4.378 1857 4.444 1858 4.51 1859 4.534 1860 4.558 1861 4.582 1862 4.606 1863 4.63 1864 4.656 1865 4.682 1866 4.708 1867 4.734 1868 4.76 1869 4.782 1870 4.804 1871 4.826 1872 4.848 1873 4.87 1874 4.852 1875 4.834 1876 4.816 1877 4.798 1878 4.78 1879 4.746 1880 4.712 1881 4.678 1882 4.644 1883 4.61 1884 4.548 1885 4.486 1886 4.424 1887 4.362 1888 4.3 1889 4.274 1890 4.248 1891 4.222 1892 4.196 1893 4.17 1894 4.132 1895 4.094 1896 4.056 1897 4.018 1898 3.98 1899 3.909 1900 3.839 1901 3.786 1902 3.733 1903 3.68 1904 3.627 1905 3.574 1906 3.521 1907 3.468 1908 3.415 1909 3.362 1910 3.309 1911 3.256 1912 3.203 1913 3.15 1914 3.097 1915 3.045 1916 2.992 1917 2.939 1918 2.886 1919 2.833 1920 2.78 1921 2.727 1922 2.674 1923 2.621 1924 2.568 1925 2.515 1926 2.462 1927 2.409 1928 2.356 1929 2.303 1930 2.25 1931 2.22 1932 2.19 1933 2.08 1934 2.04 1935 1.94 1936 1.95 1937 1.99 1938 2.11 1939 2.1 1940 1.84 1941 1.66 1942 1.81 1943 2.06 1944 2.12 1945 2.17 1946 2.53 1947 2.47 1948 2.45 1949 2.39 1950 2.295 1951 2.305 1952 2.327 1953 2.353 1954 2.383 1955 2.417 1956 2.454 1957 2.494 1958 2.534 1959 2.572 1960 2.604 1961 2.625 1962 2.633 1963 2.625 1964 2.599 1965 2.557 1966 2.501 1967 2.433 1968 2.36 1969 2.283 1970 2.206 1971 2.129 1972 2.052 1973 1.977 1974 1.905 1975 1.839 1976 1.781 1977 1.731 1978 1.689 1979 1.655 1980 1.629 1981 1.609 1982 1.594 1983 1.581 1984 1.571 1985 1.564 1986 1.56 1987 1.561 1988 1.565 1989 1.573 1990 1.582 1991 1.591 1992 1.599 1993 1.603 1994 1.605 1995 1.606 1996 1.605 1997 1.607 1998 1.612 1999 1.62 2000 1.633 2001 1.652 2002 1.675 2003 1.7 2004 1.727 2005 1.754 2006 1.78 2007 1.801 2008 1.819 2009 1.833 2010 1.842 2011 1.847 2012 1.851 2013 1.854 2014 1.857 2015 1.861 2016 1.865 2017 1.869 2018 1.873 2019 1.876 2020 1.88 2021 1.883 2022 1.886 2023 1.889 2024 1.892 2030 1.907 2040 1.925 2050 1.935 2070 1.948 2080 1.952 2099 1.956