Year Measure
1800 945
1801 945
1802 945
1803 945
1804 945
1805 945
1806 945
1807 945
1808 945
1809 945
1810 945
1811 945
1812 945
1813 945
1814 945
1815 945
1816 945
1817 945
1818 945
1819 945
1820 945
1821 949.4
1822 953.8
1823 958.3
1824 962.7
1825 967.2
1826 971.7
1827 976.2
1828 980.8
1829 985.4
1830 989.9
1831 994.6
1832 999.2
1833 1004
1834 1009
1835 1013
1836 1018
1837 1023
1838 1027
1839 1032
1840 1037
1841 1042
1842 1047
1843 1052
1844 1056
1845 1061
1846 1066
1847 1071
1848 1076
1849 1081
1850 1086
1851 1091
1852 1096
1853 1102
1854 1107
1855 1112
1856 1117
1857 1122
1858 1127
1859 1133
1860 1138
1861 1143
1862 1149
1863 1154
1864 1159
1865 1165
1866 1170
1867 1176
1868 1181
1869 1187
1870 1192
1871 1198
1872 1203
1873 1209
1874 1214
1875 1220
1876 1226
1877 1232
1878 1237
1879 1243
1880 1249
1881 1255
1882 1260
1883 1266
1884 1272
1885 1278
1886 1284
1887 1290
1888 1296
1889 1302
1890 1308
1891 1314
1892 1320
1893 1327
1894 1333
1895 1339
1896 1345
1897 1351
1898 1358
1899 1364
1900 1370
1901 1377
1902 1383
1903 1390
1904 1396
1905 1403
1906 1409
1907 1416
1908 1422
1909 1429
1910 1436
1911 1442
1912 1449
1913 1456
1914 1465
1915 1474
1916 1484
1917 1493
1918 1502
1919 1512
1920 1521
1921 1531
1922 1541
1923 1550
1924 1560
1925 1570
1926 1580
1927 1590
1928 1600
1929 1610
1930 1620
1931 1631
1932 1641
1933 1651
1934 1662
1935 1672
1936 1683
1937 1693
1938 1704
1939 1715
1940 1726
1941 1737
1942 1747
1943 1759
1944 1770
1945 1781
1946 1792
1947 1803
1948 1815
1949 1826
1950 1838
1951 1824
1952 2011
1953 2050
1954 2059
1955 1919
1956 2017
1957 1911
1958 2129
1959 2007
1960 2214
1961 2367
1962 2274
1963 2565
1964 2620
1965 2725
1966 2727
1967 2647
1968 2861
1969 2902
1970 3012
1971 3268
1972 3771
1973 3662
1974 3863
1975 4033
1976 4236
1977 4274
1978 4453
1979 4636
1980 4854
1981 4995
1982 4876
1983 5011
1984 5058
1985 5213
1986 5009
1987 5219
1988 5112
1989 5197
1990 5502
1991 5604
1992 5920
1993 5932
1994 6011
1995 6055
1996 6393
1997 6649
1998 6879
1999 7201
2000 7455
2001 7680
2002 7726
2003 8094
2004 8468
2005 8707
2006 9109
2007 9585
2008 9938
2009 10190
2010 10410
2011 10240
2012 10500
2013 10650
2014 10830
2015 11170
2016 11520
2017 11880
2018 12260
2019 12650