Year Measure
1800 882
1801 882
1802 882
1803 882
1804 882
1805 882
1806 882
1807 882
1808 882
1809 882
1810 882
1811 882
1812 882
1813 882
1814 882
1815 882
1816 882
1817 882
1818 882
1819 882
1820 882
1821 887.9
1822 893.7
1823 899.6
1824 905.6
1825 911.6
1826 917.6
1827 923.7
1828 929.8
1829 935.9
1830 942.1
1831 948.3
1832 954.6
1833 960.9
1834 967.2
1835 973.6
1836 980.1
1837 986.5
1838 993.1
1839 999.6
1840 1006
1841 1013
1842 1020
1843 1026
1844 1033
1845 1040
1846 1047
1847 1054
1848 1061
1849 1068
1850 1075
1851 1082
1852 1089
1853 1096
1854 1103
1855 1111
1856 1118
1857 1125
1858 1133
1859 1140
1860 1148
1861 1155
1862 1163
1863 1171
1864 1179
1865 1186
1866 1194
1867 1202
1868 1210
1869 1218
1870 1226
1871 1234
1872 1242
1873 1250
1874 1259
1875 1267
1876 1275
1877 1284
1878 1292
1879 1301
1880 1309
1881 1318
1882 1327
1883 1336
1884 1344
1885 1353
1886 1362
1887 1371
1888 1380
1889 1389
1890 1399
1891 1408
1892 1417
1893 1427
1894 1436
1895 1445
1896 1455
1897 1465
1898 1474
1899 1484
1900 1494
1901 1504
1902 1514
1903 1524
1904 1534
1905 1544
1906 1554
1907 1564
1908 1575
1909 1585
1910 1596
1911 1606
1912 1617
1913 1627
1914 1643
1915 1659
1916 1675
1917 1691
1918 1707
1919 1723
1920 1740
1921 1757
1922 1774
1923 1791
1924 1808
1925 1825
1926 1843
1927 1860
1928 1878
1929 1896
1930 1914
1931 1933
1932 1951
1933 1970
1934 1989
1935 2008
1936 2027
1937 2047
1938 2066
1939 2086
1940 2106
1941 2127
1942 2147
1943 2168
1944 2188
1945 2209
1946 2231
1947 2252
1948 2274
1949 2295
1950 2317
1951 2396
1952 2478
1953 2562
1954 2649
1955 2739
1956 2832
1957 2928
1958 3028
1959 3131
1960 3237
1961 3334
1962 3413
1963 3162
1964 3243
1965 3238
1966 3205
1967 2870
1968 3027
1969 3082
1970 3378
1971 3441
1972 4282
1973 3765
1974 3395
1975 3103
1976 3388
1977 3449
1978 3821
1979 3912
1980 3956
1981 4165
1982 4333
1983 4491
1984 4720
1985 4968
1986 5251
1987 5436
1988 6168
1989 6261
1990 6520
1991 6510
1992 6951
1993 6918
1994 6671
1995 6700
1996 6753
1997 7610
1998 7963
1999 8271
2000 8377
2001 8385
2002 8682
2003 8908
2004 9405
2005 9597
2006 10130
2007 10390
2008 10330
2009 10090
2010 9844
2011 9874
2012 10010
2013 10220
2014 10450
2015 10740
2016 11070
2017 11430
2018 11790
2019 12160