Year Measure
1800 545
1801 545.3
1802 545.5
1803 545.8
1804 546
1805 546.3
1806 546.6
1807 546.8
1808 547.1
1809 547.3
1810 547.6
1811 547.9
1812 548.1
1813 548.4
1814 548.6
1815 548.9
1816 549.2
1817 549.4
1818 549.7
1819 549.9
1820 550.2
1821 550.5
1822 550.7
1823 551
1824 551.2
1825 551.5
1826 551.8
1827 552
1828 552.3
1829 552.5
1830 552.8
1831 553.1
1832 553.3
1833 553.6
1834 553.9
1835 554.1
1836 554.4
1837 554.6
1838 554.9
1839 555.2
1840 555.4
1841 555.7
1842 556
1843 556.2
1844 556.5
1845 556.8
1846 557
1847 557.3
1848 557.5
1849 557.8
1850 558.1
1851 558.3
1852 558.6
1853 558.9
1854 559.1
1855 559.4
1856 559.7
1857 559.9
1858 560.2
1859 560.5
1860 560.7
1861 561
1862 561.3
1863 561.5
1864 561.8
1865 562.1
1866 562.3
1867 562.6
1868 562.9
1869 563.1
1870 563.4
1871 563.7
1872 563.9
1873 564.2
1874 564.5
1875 564.7
1876 565
1877 565.3
1878 565.5
1879 565.8
1880 566.1
1881 566.3
1882 566.6
1883 566.9
1884 567.1
1885 567.4
1886 567.7
1887 568
1888 568.2
1889 568.5
1890 568.8
1891 569
1892 569.3
1893 569.6
1894 569.8
1895 570.1
1896 570.4
1897 570.7
1898 570.9
1899 571.2
1900 571.5
1901 571.7
1902 572
1903 572.3
1904 572.6
1905 572.8
1906 573.1
1907 573.4
1908 573.6
1909 573.9
1910 574.2
1911 574.5
1912 574.7
1913 575
1914 586.3
1915 597.9
1916 609.7
1917 621.7
1918 634
1919 646.5
1920 659.3
1921 672.3
1922 685.6
1923 699.1
1924 712.9
1925 726.9
1926 741.3
1927 755.9
1928 770.8
1929 786
1930 801.5
1931 817.4
1932 833.5
1933 849.9
1934 866.7
1935 883.8
1936 901.2
1937 919
1938 937.2
1939 955.7
1940 974.5
1941 993.7
1942 1013
1943 1033
1944 1054
1945 1075
1946 1096
1947 1117
1948 1139
1949 1162
1950 1185
1951 1208
1952 1232
1953 1256
1954 1281
1955 1306
1956 1332
1957 1358
1958 1385
1959 1413
1960 1440
1961 1469
1962 1498
1963 1527
1964 1558
1965 1588
1966 1620
1967 1652
1968 1684
1969 1717
1970 1751
1971 1772
1972 1786
1973 2392
1974 2751
1975 2724
1976 2681
1977 2674
1978 2737
1979 2703
1980 2426
1981 2573
1982 2424
1983 2397
1984 2234
1985 2533
1986 2667
1987 2659
1988 2758
1989 2716
1990 2763
1991 2894
1992 2933
1993 3094
1994 3016
1995 3185
1996 3063
1997 2873
1998 2966
1999 3018
2000 3167
2001 3230
2002 3256
2003 3320
2004 3220
2005 3301
2006 3312
2007 3262
2008 3197
2009 3243
2010 3337
2011 3412
2012 3421
2013 3448
2014 3475
2015 3499
2016 3523
2017 3546
2018 3568
2019 3588