Year Measure
1800 756.3
1801 756.3
1802 756.3
1803 756.3
1804 756.3
1805 756.3
1806 756.3
1807 756.3
1808 756.3
1809 756.3
1810 756.3
1811 756.3
1812 756.3
1813 756.3
1814 756.3
1815 756.3
1816 756.3
1817 756.3
1818 756.3
1819 756.3
1820 756.3
1821 758.8
1822 761.3
1823 763.7
1824 766.2
1825 768.7
1826 771.2
1827 773.7
1828 776.2
1829 778.7
1830 781.3
1831 783.8
1832 786.3
1833 788.9
1834 791.5
1835 794
1836 796.6
1837 799.2
1838 801.8
1839 804.4
1840 807
1841 809.6
1842 812.3
1843 814.9
1844 817.5
1845 820.2
1846 822.9
1847 825.5
1848 828.2
1849 830.9
1850 833.6
1851 836.3
1852 839
1853 841.7
1854 844.5
1855 847.2
1856 850
1857 852.7
1858 855.5
1859 858.3
1860 861.1
1861 863.9
1862 866.7
1863 869.5
1864 872.3
1865 875.1
1866 878
1867 880.8
1868 883.7
1869 886.6
1870 889.4
1871 892.3
1872 895.2
1873 898.1
1874 901.1
1875 904
1876 906.9
1877 909.9
1878 912.8
1879 915.8
1880 918.8
1881 921.7
1882 924.7
1883 927.7
1884 930.7
1885 933.8
1886 936.8
1887 939.8
1888 942.9
1889 946
1890 949
1891 952.1
1892 955.2
1893 958.3
1894 961.4
1895 964.5
1896 967.7
1897 970.8
1898 974
1899 977.1
1900 980.3
1901 983.5
1902 986.7
1903 989.9
1904 993.1
1905 996.3
1906 999.6
1907 1003
1908 1006
1909 1009
1910 1013
1911 1016
1912 1019
1913 1023
1914 1032
1915 1042
1916 1051
1917 1061
1918 1071
1919 1081
1920 1091
1921 1101
1922 1112
1923 1122
1924 1133
1925 1143
1926 1154
1927 1165
1928 1176
1929 1187
1930 1198
1931 1209
1932 1220
1933 1231
1934 1243
1935 1255
1936 1266
1937 1278
1938 1290
1939 1302
1940 1314
1941 1327
1942 1339
1943 1351
1944 1364
1945 1377
1946 1390
1947 1403
1948 1416
1949 1429
1950 1442
1951 1456
1952 1469
1953 1483
1954 1497
1955 1511
1956 1525
1957 1539
1958 1554
1959 1568
1960 1583
1961 1598
1962 1613
1963 1628
1964 1643
1965 1658
1966 1674
1967 1689
1968 1705
1969 1721
1970 1737
1971 1757
1972 1756
1973 2328
1974 2658
1975 2635
1976 2621
1977 2662
1978 2788
1979 2819
1980 2588
1981 2375
1982 1888
1983 1853
1984 1958
1985 1888
1986 1845
1987 1992
1988 2160
1989 2082
1990 2369
1991 2441
1992 2496
1993 2586
1994 2839
1995 2686
1996 2515
1997 2757
1998 3172
1999 3109
2000 3064
2001 3097
2002 3321
2003 3190
2004 3129
2005 2995
2006 3048
2007 3230
2008 3480
2009 3319
2010 3222
2011 3488
2012 3481
2013 3504
2014 3548
2015 3599
2016 3654
2017 3704
2018 3757
2019 3813