Year Measure
1800 1038
1801 1039
1802 1041
1803 1043
1804 1045
1805 1047
1806 1048
1807 1050
1808 1052
1809 1054
1810 1055
1811 1057
1812 1059
1813 1061
1814 1063
1815 1064
1816 1066
1817 1068
1818 1070
1819 1072
1820 1073
1821 1079
1822 1084
1823 1090
1824 1096
1825 1101
1826 1107
1827 1113
1828 1118
1829 1124
1830 1130
1831 1136
1832 1142
1833 1147
1834 1153
1835 1159
1836 1165
1837 1171
1838 1177
1839 1183
1840 1189
1841 1195
1842 1202
1843 1208
1844 1214
1845 1220
1846 1227
1847 1233
1848 1239
1849 1246
1850 1252
1851 1258
1852 1265
1853 1271
1854 1278
1855 1285
1856 1291
1857 1298
1858 1305
1859 1311
1860 1318
1861 1316
1862 1232
1863 1316
1864 1331
1865 1308
1866 1317
1867 1217
1868 1379
1869 1514
1870 1566
1871 1549
1872 1574
1873 1640
1874 1655
1875 1665
1876 1731
1877 1665
1878 1612
1879 1604
1880 1587
1881 1526
1882 1653
1883 1690
1884 1676
1885 1692
1886 1753
1887 1753
1888 1790
1889 1823
1890 1898
1891 1856
1892 1759
1893 1843
1894 1923
1895 2051
1896 2158
1897 2232
1898 2293
1899 2209
1900 2293
1901 2249
1902 2187
1903 2317
1904 2379
1905 2394
1906 2466
1907 2521
1908 2514
1909 2590
1910 2620
1911 2665
1912 2780
1913 2901
1914 2750
1915 2586
1916 2602
1917 2173
1918 1883
1919 2279
1920 2536
1921 2590
1922 2828
1923 3005
1924 3057
1925 3200
1926 3287
1927 3514
1928 3721
1929 3734
1930 3664
1931 3547
1932 3504
1933 3713
1934 4107
1935 4250
1936 4506
1937 4729
1938 4933
1939 4683
1940 4426
1941 4566
1942 4573
1943 5081
1944 5064
1945 4741
1946 5062
1947 5108
1948 5439
1949 5694
1950 5846
1951 6283
1952 6425
1953 6393
1954 6874
1955 7142
1956 7278
1957 7545
1958 7524
1959 7908
1960 8563
1961 9151
1962 9372
1963 9612
1964 10040
1965 10540
1966 10750
1967 10920
1968 11120
1969 12200
1970 13160
1971 13420
1972 14360
1973 15240
1974 15610
1975 15720
1976 15610
1977 15610
1978 15890
1979 16950
1980 17800
1981 18050
1982 18530
1983 18920
1984 19390
1985 19960
1986 20370
1987 21140
1988 22110
1989 23290
1990 23180
1991 21580
1992 20650
1993 20290
1994 21010
1995 21650
1996 22400
1997 23720
1998 25000
1999 25920
2000 27170
2001 27830
2002 28200
2003 28650
2004 29650
2005 30470
2006 31680
2007 33230
2008 33160
2009 30190
2010 31050
2011 31760
2012 31550
2013 31570
2014 31790
2015 32110
2016 32620
2017 33160
2018 33700