Year Measure
1800 907.7
1801 907.7
1802 907.7
1803 907.7
1804 907.7
1805 907.7
1806 907.7
1807 907.7
1808 907.7
1809 907.7
1810 907.7
1811 907.7
1812 907.7
1813 907.7
1814 907.7
1815 907.7
1816 907.7
1817 907.7
1818 907.7
1819 907.7
1820 907.7
1821 909.6
1822 911.5
1823 913.4
1824 915.3
1825 917.2
1826 919.2
1827 921.1
1828 923
1829 925
1830 926.9
1831 928.9
1832 930.8
1833 932.8
1834 934.7
1835 936.7
1836 938.6
1837 940.6
1838 942.6
1839 944.6
1840 946.5
1841 948.5
1842 950.5
1843 952.5
1844 954.5
1845 956.5
1846 958.5
1847 960.5
1848 962.5
1849 964.6
1850 966.6
1851 968.6
1852 970.6
1853 972.7
1854 974.7
1855 976.8
1856 978.8
1857 980.9
1858 982.9
1859 985
1860 987
1861 989.1
1862 991.2
1863 993.3
1864 995.4
1865 997.4
1866 999.5
1867 1002
1868 1004
1869 1006
1870 1008
1871 1023
1872 1038
1873 1053
1874 1069
1875 1084
1876 1100
1877 1116
1878 1133
1879 1149
1880 1166
1881 1183
1882 1201
1883 1219
1884 1236
1885 1255
1886 1273
1887 1292
1888 1311
1889 1330
1890 1350
1891 1369
1892 1390
1893 1410
1894 1431
1895 1452
1896 1473
1897 1495
1898 1517
1899 1539
1900 1562
1901 1585
1902 1608
1903 1632
1904 1656
1905 1680
1906 1705
1907 1730
1908 1755
1909 1781
1910 1807
1911 1834
1912 1861
1913 1888
1914 1916
1915 1945
1916 1974
1917 2004
1918 2034
1919 2064
1920 2095
1921 2127
1922 2159
1923 2191
1924 2224
1925 2257
1926 2291
1927 2325
1928 2360
1929 2395
1930 2431
1931 2468
1932 2505
1933 2542
1934 2580
1935 2619
1936 2658
1937 2698
1938 2739
1939 2780
1940 2821
1941 2864
1942 2907
1943 2950
1944 2994
1945 3039
1946 3085
1947 3131
1948 3178
1949 3225
1950 3274
1951 3388
1952 3509
1953 3630
1954 3758
1955 3890
1956 4028
1957 4169
1958 4315
1959 4467
1960 4625
1961 4787
1962 5391
1963 6026
1964 6387
1965 7121
1966 7180
1967 7120
1968 7202
1969 7889
1970 8406
1971 8809
1972 9553
1973 10490
1974 10470
1975 10320
1976 11670
1977 12850
1978 13690
1979 14460
1980 15500
1981 16530
1982 16730
1983 17410
1984 18960
1985 18840
1986 20600
1987 23020
1988 24670
1989 25150
1990 25890
1991 27040
1992 28440
1993 29710
1994 30650
1995 31040
1996 31530
1997 32600
1998 30750
1999 31540
2000 34430
2001 34310
2002 34700
2003 35570
2004 38370
2005 40990
2006 43450
2007 46030
2008 46840
2009 45470
2010 48180
2011 50090
2012 50400
2013 51410
2014 52850
2015 54380
2016 56000
2017 57670
2018 59410
2019 61230