Year Measure
1800 548.4
1801 549.4
1802 550.4
1803 551.4
1804 552.4
1805 553.4
1806 554.5
1807 555.5
1808 556.5
1809 557.5
1810 558.5
1811 559.5
1812 560.6
1813 561.6
1814 562.6
1815 563.6
1816 564.7
1817 565.7
1818 566.7
1819 567.8
1820 568.8
1821 569.8
1822 570.9
1823 571.9
1824 573
1825 574
1826 575.1
1827 576.1
1828 577.2
1829 578.2
1830 579.3
1831 580.3
1832 581.4
1833 582.5
1834 583.5
1835 584.6
1836 585.7
1837 586.7
1838 587.8
1839 588.9
1840 590
1841 591
1842 592.1
1843 593.2
1844 594.3
1845 595.4
1846 596.5
1847 597.5
1848 598.6
1849 599.7
1850 600.8
1851 601.9
1852 603
1853 604.1
1854 605.2
1855 606.3
1856 607.4
1857 608.6
1858 609.7
1859 610.8
1860 611.9
1861 613
1862 614.1
1863 615.3
1864 616.4
1865 617.5
1866 618.6
1867 619.8
1868 620.9
1869 622
1870 623.2
1871 624.3
1872 625.5
1873 626.6
1874 627.7
1875 628.9
1876 630
1877 631.2
1878 632.3
1879 633.5
1880 634.7
1881 635.8
1882 637
1883 638.1
1884 639.3
1885 640.5
1886 641.6
1887 642.8
1888 644
1889 645.2
1890 646.4
1891 647.5
1892 648.7
1893 649.9
1894 651.1
1895 652.3
1896 653.5
1897 654.7
1898 655.9
1899 657.1
1900 658.3
1901 659.5
1902 660.7
1903 661.9
1904 663.1
1905 664.3
1906 665.5
1907 666.7
1908 667.9
1909 669.2
1910 670.4
1911 671.6
1912 672.8
1913 674.1
1914 675.3
1915 676.5
1916 677.8
1917 679
1918 680.3
1919 681.5
1920 682.7
1921 684
1922 685.2
1923 686.5
1924 687.7
1925 689
1926 690.3
1927 691.5
1928 692.8
1929 694.1
1930 695.3
1931 696.6
1932 697.9
1933 699.1
1934 700.4
1935 701.7
1936 703
1937 704.3
1938 705.6
1939 706.8
1940 708.1
1941 709.4
1942 710.7
1943 712
1944 713.3
1945 714.6
1946 715.9
1947 717.2
1948 718.6
1949 719.9
1950 721.2
1951 722.5
1952 723.8
1953 725.1
1954 726.5
1955 727.8
1956 729.1
1957 730.5
1958 731.8
1959 733.1
1960 734.5
1961 735.8
1962 737.2
1963 738.5
1964 739.9
1965 741.2
1966 742.6
1967 743.9
1968 745.3
1969 746.6
1970 748
1971 749.4
1972 750.7
1973 752.1
1974 770.1
1975 788.5
1976 807.3
1977 826.6
1978 846.3
1979 866.5
1980 887.2
1981 908.4
1982 930.1
1983 952.4
1984 975.1
1985 998.4
1986 1022
1987 1047
1988 1072
1989 1097
1990 1123
1991 1204
1992 1283
1993 1367
1994 1466
1995 1586
1996 1765
1997 1869
1998 1866
1999 1216
2000 1373
2001 1565
2002 1414
2003 1333
2004 1292
2005 1354
2006 1270
2007 1375
2008 1530
2009 1675
2010 1782
2011 1940
2012 2059
2013 2168
2014 2296
2015 2427
2016 2590
2017 2776
2018 2975
2019 3151