Year Measure
1800 1278
1801 1278
1802 1278
1803 1278
1804 1278
1805 1278
1806 1278
1807 1278
1808 1278
1809 1278
1810 1278
1811 1278
1812 1278
1813 1278
1814 1278
1815 1278
1816 1278
1817 1278
1818 1278
1819 1278
1820 1278
1821 1286
1822 1295
1823 1303
1824 1312
1825 1321
1826 1329
1827 1338
1828 1347
1829 1356
1830 1365
1831 1374
1832 1383
1833 1392
1834 1401
1835 1411
1836 1420
1837 1429
1838 1439
1839 1448
1840 1458
1841 1467
1842 1477
1843 1487
1844 1497
1845 1507
1846 1517
1847 1527
1848 1537
1849 1547
1850 1557
1851 1567
1852 1578
1853 1588
1854 1599
1855 1609
1856 1620
1857 1631
1858 1641
1859 1652
1860 1663
1861 1674
1862 1685
1863 1696
1864 1707
1865 1719
1866 1730
1867 1742
1868 1753
1869 1765
1870 1776
1871 1788
1872 1800
1873 1812
1874 1824
1875 1836
1876 1848
1877 1860
1878 1872
1879 1885
1880 1897
1881 1910
1882 1922
1883 1935
1884 1948
1885 1961
1886 1974
1887 1987
1888 2000
1889 2013
1890 2026
1891 2040
1892 2053
1893 2067
1894 2080
1895 2094
1896 2108
1897 2122
1898 2136
1899 2150
1900 2164
1901 2179
1902 2193
1903 2207
1904 2222
1905 2237
1906 2252
1907 2266
1908 2281
1909 2296
1910 2312
1911 2327
1912 2342
1913 2358
1914 2393
1915 2429
1916 2465
1917 2501
1918 2539
1919 2576
1920 2615
1921 2654
1922 2693
1923 2733
1924 2774
1925 2815
1926 2857
1927 2900
1928 2943
1929 2987
1930 3031
1931 3077
1932 3122
1933 3169
1934 3216
1935 3264
1936 3313
1937 3362
1938 3412
1939 3463
1940 3514
1941 3567
1942 3620
1943 3674
1944 3728
1945 3784
1946 3840
1947 3898
1948 3956
1949 4014
1950 4074
1951 3962
1952 3853
1953 3747
1954 3644
1955 3544
1956 3447
1957 3352
1958 3260
1959 3170
1960 3083
1961 3139
1962 3091
1963 2645
1964 2876
1965 3106
1966 3196
1967 3263
1968 3231
1969 3398
1970 3494
1971 3566
1972 3423
1973 3447
1974 3694
1975 3982
1976 4013
1977 3874
1978 3772
1979 3677
1980 3724
1981 3772
1982 3276
1983 3060
1984 2917
1985 3002
1986 2994
1987 3044
1988 2954
1989 2825
1990 2749
1991 2915
1992 3136
1993 3380
1994 3655
1995 3830
1996 4131
1997 4395
1998 4329
1999 4466
2000 4408
2001 4504
2002 4544
2003 4488
2004 4628
2005 4535
2006 4752
2007 5070
2008 5149
2009 5310
2010 5525
2011 5808
2012 6037
2013 6327
2014 6598
2015 6840
2016 7152
2017 7440
2018 7733
2019 7961