Year Measure
1800 1337
1801 1338
1802 1339
1803 1341
1804 1342
1805 1344
1806 1345
1807 1346
1808 1348
1809 1349
1810 1351
1811 1352
1812 1353
1813 1355
1814 1356
1815 1358
1816 1359
1817 1361
1818 1362
1819 1363
1820 1365
1821 1373
1822 1382
1823 1391
1824 1400
1825 1409
1826 1417
1827 1426
1828 1435
1829 1445
1830 1454
1831 1463
1832 1472
1833 1482
1834 1491
1835 1500
1836 1510
1837 1519
1838 1529
1839 1539
1840 1548
1841 1558
1842 1568
1843 1578
1844 1588
1845 1598
1846 1608
1847 1618
1848 1629
1849 1639
1850 1649
1851 1660
1852 1670
1853 1681
1854 1692
1855 1702
1856 1713
1857 1724
1858 1735
1859 1746
1860 1757
1861 1768
1862 1779
1863 1790
1864 1802
1865 1813
1866 1825
1867 1836
1868 1848
1869 1860
1870 1871
1871 1883
1872 1895
1873 1907
1874 1919
1875 1931
1876 1944
1877 1956
1878 1968
1879 1981
1880 1993
1881 2006
1882 2019
1883 2031
1884 2044
1885 2057
1886 1978
1887 2313
1888 2225
1889 2068
1890 2060
1891 1887
1892 2066
1893 2341
1894 2662
1895 2463
1896 2713
1897 2667
1898 2738
1899 2906
1900 2843
1901 2914
1902 3167
1903 2948
1904 3260
1905 2886
1906 2758
1907 2650
1908 2894
1909 3005
1910 3206
1911 2962
1912 3201
1913 3362
1914 3211
1915 3304
1916 2938
1917 2580
1918 2064
1919 1899
1920 2468
1921 2838
1922 3264
1923 3493
1924 3552
1925 3718
1926 3820
1927 4084
1928 4324
1929 4339
1930 4257
1931 4121
1932 4072
1933 4315
1934 4773
1935 4939
1936 5236
1937 5496
1938 5733
1939 5442
1940 5143
1941 5047
1942 4952
1943 4859
1944 4768
1945 4678
1946 4591
1947 5101
1948 5763
1949 6294
1950 6818
1951 6732
1952 7046
1953 7228
1954 7453
1955 7948
1956 8557
1957 8579
1958 9062
1959 8803
1960 9466
1961 9832
1962 9934
1963 9562
1964 10650
1965 11120
1966 11530
1967 11910
1968 12480
1969 12540
1970 13380
1971 13600
1972 13540
1973 14540
1974 14820
1975 14720
1976 15270
1977 15500
1978 15750
1979 15540
1980 15440
1981 15450
1982 15710
1983 16070
1984 16130
1985 16130
1986 16650
1987 16720
1988 16940
1989 17110
1990 16590
1991 15610
1992 12290
1993 10330
1994 9344
1995 9846
1996 10320
1997 11060
1998 11880
1999 11680
2000 12150
2001 12960
2002 13890
2003 15290
2004 16460
2005 17770
2006 19270
2007 21280
2008 22010
2009 18850
2010 19440
2011 22320
2012 23450
2013 24340
2014 25270
2015 26280
2016 27360
2017 28500
2018 29720
2019 31000