Year Measure
1800 512.2
1801 512.2
1802 512.2
1803 512.2
1804 512.2
1805 512.2
1806 512.2
1807 512.2
1808 512.2
1809 512.2
1810 512.2
1811 512.2
1812 512.2
1813 512.2
1814 512.2
1815 512.2
1816 512.2
1817 512.2
1818 512.2
1819 512.2
1820 512.2
1821 515.5
1822 519
1823 522.4
1824 525.8
1825 529.3
1826 532.8
1827 536.3
1828 539.9
1829 543.4
1830 547
1831 550.6
1832 554.3
1833 557.9
1834 561.6
1835 565.3
1836 569.1
1837 572.8
1838 576.6
1839 580.4
1840 584.3
1841 588.1
1842 592
1843 595.9
1844 599.9
1845 603.8
1846 607.8
1847 611.8
1848 615.9
1849 619.9
1850 624
1851 628.2
1852 632.3
1853 636.5
1854 640.7
1855 644.9
1856 649.2
1857 653.5
1858 657.8
1859 662.2
1860 666.5
1861 670.9
1862 675.4
1863 679.8
1864 684.3
1865 688.8
1866 693.4
1867 698
1868 702.6
1869 707.2
1870 711.9
1871 716.6
1872 721.3
1873 726.1
1874 730.9
1875 735.7
1876 740.6
1877 745.5
1878 750.4
1879 755.4
1880 760.4
1881 765.4
1882 770.5
1883 775.5
1884 780.7
1885 785.8
1886 791
1887 796.2
1888 801.5
1889 806.8
1890 812.1
1891 817.5
1892 822.9
1893 828.3
1894 833.8
1895 839.3
1896 844.9
1897 850.5
1898 856.1
1899 861.7
1900 867.4
1901 873.2
1902 878.9
1903 884.7
1904 890.6
1905 896.5
1906 902.4
1907 908.4
1908 914.4
1909 920.4
1910 926.5
1911 932.6
1912 938.8
1913 945
1914 963.8
1915 983
1916 1003
1917 1022
1918 1043
1919 1064
1920 1085
1921 1106
1922 1128
1923 1151
1924 1174
1925 1197
1926 1221
1927 1245
1928 1270
1929 1295
1930 1321
1931 1347
1932 1374
1933 1402
1934 1429
1935 1458
1936 1487
1937 1517
1938 1547
1939 1577
1940 1609
1941 1641
1942 1674
1943 1707
1944 1741
1945 1776
1946 1811
1947 1847
1948 1884
1949 1921
1950 1959
1951 1998
1952 2038
1953 2079
1954 2120
1955 2162
1956 2205
1957 2249
1958 2294
1959 2340
1960 2386
1961 2434
1962 2482
1963 2532
1964 2582
1965 2633
1966 2686
1967 2739
1968 2794
1969 2849
1970 2906
1971 3150
1972 3383
1973 3617
1974 3868
1975 4149
1976 4471
1977 4830
1978 5216
1979 5608
1980 5990
1981 6349
1982 6692
1983 7041
1984 7429
1985 7871
1986 8379
1987 8939
1988 9557
1989 10200
1990 10750
1991 11230
1992 11610
1993 12230
1994 13050
1995 13320
1996 13960
1997 14440
1998 15430
1999 16100
2000 16100
2001 16300
2002 15540
2003 16050
2004 17010
2005 18730
2006 20690
2007 21460
2008 22430
2009 19240
2010 20090
2011 20880
2012 20290
2013 20280