Year Measure
1800 623.2
1801 623.2
1802 623.2
1803 623.2
1804 623.2
1805 623.2
1806 623.2
1807 623.2
1808 623.2
1809 623.2
1810 623.2
1811 623.2
1812 623.2
1813 623.2
1814 623.2
1815 623.2
1816 623.2
1817 623.2
1818 623.2
1819 623.2
1820 623.2
1821 624.2
1822 625.2
1823 626.1
1824 627.1
1825 628
1826 629
1827 630
1828 630.9
1829 631.9
1830 632.9
1831 633.9
1832 634.8
1833 635.8
1834 636.8
1835 637.8
1836 638.8
1837 639.7
1838 640.7
1839 641.7
1840 642.7
1841 643.7
1842 644.7
1843 645.7
1844 646.7
1845 647.6
1846 648.6
1847 649.6
1848 650.6
1849 651.6
1850 652.6
1851 653.6
1852 654.7
1853 655.7
1854 656.7
1855 657.7
1856 658.7
1857 659.7
1858 660.7
1859 661.7
1860 662.8
1861 663.8
1862 664.8
1863 665.8
1864 666.8
1865 667.9
1866 668.9
1867 669.9
1868 670.9
1869 672
1870 673
1871 674
1872 675.1
1873 676.1
1874 677.2
1875 678.2
1876 679.2
1877 680.3
1878 681.3
1879 682.4
1880 683.4
1881 684.5
1882 685.5
1883 686.6
1884 687.6
1885 688.7
1886 689.8
1887 690.8
1888 691.9
1889 693
1890 694
1891 695.1
1892 696.2
1893 697.2
1894 698.3
1895 699.4
1896 700.4
1897 701.5
1898 702.6
1899 703.7
1900 704.8
1901 705.8
1902 706.9
1903 708
1904 709.1
1905 710.2
1906 711.3
1907 712.4
1908 713.5
1909 714.6
1910 715.7
1911 716.8
1912 717.9
1913 719
1914 720.1
1915 721.2
1916 722.3
1917 723.4
1918 724.5
1919 725.6
1920 726.8
1921 727.9
1922 729
1923 730.1
1924 731.2
1925 732.4
1926 733.5
1927 734.6
1928 735.8
1929 736.9
1930 738
1931 739.2
1932 740.3
1933 741.4
1934 742.6
1935 743.7
1936 744.9
1937 746
1938 747.1
1939 748.3
1940 749.4
1941 750.6
1942 751.8
1943 752.9
1944 754.1
1945 755.2
1946 756.4
1947 757.6
1948 758.7
1949 759.9
1950 761.1
1951 782.1
1952 807.7
1953 831.3
1954 857
1955 882.2
1956 908.3
1957 937.2
1958 964.5
1959 993.8
1960 1023
1961 1054
1962 1085
1963 1119
1964 1152
1965 1186
1966 1221
1967 1259
1968 1296
1969 1335
1970 1376
1971 1399
1972 1407
1973 1486
1974 1506
1975 1549
1976 1563
1977 1673
1978 1701
1979 1729
1980 1949
1981 1725
1982 1999
1983 2240
1984 2496
1985 2434
1986 2555
1987 2707
1988 2788
1989 2713
1990 3836
1991 2741
1992 2561
1993 2082
1994 2229
1995 2883
1996 2647
1997 2730
1998 2562
1999 2631
2000 2892
2001 3115
2002 3328
2003 3602
2004 4165
2005 4829
2006 5840
2007 6385
2008 6355
2009 5894
2010 6766
2011 7495
2012 8266
2013 9046
2014 10040
2015 10630
2016 11050
2017 11820
2018 12390
2019 13240