Year Measure
1800 732.6
1801 733.2
1802 733.9
1803 734.5
1804 735.1
1805 735.8
1806 736.4
1807 737.1
1808 737.7
1809 738.3
1810 739
1811 739.6
1812 740.3
1813 740.9
1814 741.6
1815 742.2
1816 742.8
1817 743.5
1818 744.1
1819 744.8
1820 745.4
1821 746.1
1822 746.7
1823 747.4
1824 748
1825 748.7
1826 749.3
1827 750
1828 750.6
1829 751.3
1830 751.9
1831 752.6
1832 753.2
1833 753.9
1834 754.5
1835 755.2
1836 755.9
1837 756.5
1838 757.2
1839 757.8
1840 758.5
1841 759.1
1842 759.8
1843 760.5
1844 761.1
1845 761.8
1846 762.4
1847 763.1
1848 763.8
1849 764.4
1850 765.1
1851 765.8
1852 766.4
1853 767.1
1854 767.8
1855 768.4
1856 769.1
1857 769.8
1858 770.4
1859 771.1
1860 771.8
1861 772.4
1862 773.1
1863 773.8
1864 774.4
1865 775.1
1866 775.8
1867 776.5
1868 777.1
1869 777.8
1870 778.5
1871 779.2
1872 779.8
1873 780.5
1874 781.2
1875 781.9
1876 782.6
1877 783.2
1878 783.9
1879 784.6
1880 785.3
1881 786
1882 786.6
1883 787.3
1884 788
1885 788.7
1886 789.4
1887 790.1
1888 790.7
1889 791.4
1890 792.1
1891 792.8
1892 793.5
1893 794.2
1894 794.9
1895 795.6
1896 796.3
1897 796.9
1898 797.6
1899 798.3
1900 799
1901 799.7
1902 800.4
1903 801.1
1904 801.8
1905 802.5
1906 803.2
1907 803.9
1908 804.6
1909 805.3
1910 806
1911 806.7
1912 807.4
1913 808.1
1914 808.8
1915 809.5
1916 810.2
1917 810.9
1918 811.6
1919 812.3
1920 813
1921 813.7
1922 814.4
1923 815.1
1924 815.8
1925 816.6
1926 817.3
1927 818
1928 818.7
1929 819.4
1930 820.1
1931 820.8
1932 821.5
1933 822.2
1934 823
1935 823.7
1936 824.4
1937 825.1
1938 825.8
1939 826.5
1940 827.3
1941 828
1942 828.7
1943 829.4
1944 830.1
1945 830.9
1946 831.6
1947 832.3
1948 833
1949 833.7
1950 834.5
1951 865.2
1952 874.8
1953 890.5
1954 921.7
1955 931.3
1956 946.3
1957 960.6
1958 966.4
1959 999.4
1960 1061
1961 1047
1962 1116
1963 1321
1964 1388
1965 1353
1966 1466
1967 1583
1968 1547
1969 1474
1970 1476
1971 1504
1972 1504
1973 1576
1974 1580
1975 1631
1976 1578
1977 1577
1978 1559
1979 1641
1980 1696
1981 1700
1982 1749
1983 1776
1984 1794
1985 1783
1986 1768
1987 1751
1988 1754
1989 1683
1990 1657
1991 1646
1992 1663
1993 1672
1994 1545
1995 1562
1996 1503
1997 1527
1998 1505
1999 1495
2000 1476
2001 1486
2002 1507
2003 1503
2004 1460
2005 1481
2006 1459
2007 1428
2008 1403
2009 1391
2010 1383
2011 1378
2012 1390
2013 1409
2014 1435
2015 1461
2016 1488
2017 1515
2018 1543
2019 1572