Year Measure
1800 533.9
1801 533.9
1802 533.9
1803 533.9
1804 533.9
1805 533.9
1806 533.9
1807 533.9
1808 533.9
1809 533.9
1810 533.9
1811 533.9
1812 533.9
1813 533.9
1814 533.9
1815 533.9
1816 533.9
1817 533.9
1818 533.9
1819 533.9
1820 533.9
1821 536.4
1822 538.9
1823 541.5
1824 544
1825 546.6
1826 549.1
1827 551.7
1828 554.3
1829 556.9
1830 559.5
1831 562.1
1832 564.8
1833 567.4
1834 570.1
1835 572.7
1836 575.4
1837 578.1
1838 580.8
1839 583.6
1840 586.3
1841 589
1842 591.8
1843 594.6
1844 597.4
1845 600.2
1846 603
1847 605.8
1848 608.6
1849 611.5
1850 614.4
1851 617.2
1852 620.1
1853 623.1
1854 626
1855 628.9
1856 631.9
1857 634.8
1858 637.8
1859 640.8
1860 643.8
1861 646.8
1862 649.8
1863 652.9
1864 656
1865 659
1866 662.1
1867 665.2
1868 668.3
1869 671.5
1870 674.6
1871 677.8
1872 681
1873 684.2
1874 687.4
1875 690.6
1876 693.8
1877 697.1
1878 700.4
1879 703.6
1880 706.9
1881 710.2
1882 713.6
1883 716.9
1884 720.3
1885 723.7
1886 727.1
1887 730.5
1888 733.9
1889 737.3
1890 740.8
1891 744.3
1892 747.8
1893 751.3
1894 754.8
1895 758.3
1896 761.9
1897 765.5
1898 769
1899 772.6
1900 776.3
1901 779.9
1902 783.6
1903 787.2
1904 790.9
1905 794.6
1906 798.4
1907 802.1
1908 805.9
1909 809.7
1910 813.4
1911 817.3
1912 821.1
1913 824.9
1914 841.3
1915 858.1
1916 875.1
1917 892.5
1918 910.3
1919 928.4
1920 946.9
1921 965.7
1922 984.9
1923 1004
1924 1024
1925 1045
1926 1066
1927 1087
1928 1108
1929 1130
1930 1153
1931 1176
1932 1199
1933 1223
1934 1247
1935 1272
1936 1297
1937 1323
1938 1350
1939 1376
1940 1404
1941 1432
1942 1460
1943 1489
1944 1519
1945 1549
1946 1580
1947 1611
1948 1643
1949 1676
1950 1709
1951 1743
1952 1780
1953 1814
1954 1850
1955 1888
1956 2032
1957 1950
1958 1976
1959 2151
1960 2131
1961 2074
1962 2158
1963 2040
1964 1966
1965 2050
1966 1971
1967 1859
1968 1921
1969 1986
1970 1850
1971 1922
1972 1828
1973 1624
1974 1734
1975 1895
1976 2174
1977 2427
1978 2307
1979 1992
1980 1940
1981 1916
1982 2088
1983 1996
1984 1829
1985 1648
1986 1662
1987 1661
1988 1646
1989 1734
1990 1548
1991 1607
1992 1644
1993 1647
1994 1634
1995 1639
1996 1679
1997 1798
1998 1851
1999 1937
2000 2064
2001 2129
2002 2196
2003 2288
2004 2342
2005 2477
2006 2657
2007 2888
2008 2904
2009 2915
2010 2968
2011 3505
2012 1752
2013 2080
2014 2129
2015 2396
2016 2718
2017 2753
2018 2844
2019 2950