Year Measure
1820 1529
1821 1547
1822 1565
1823 1584
1824 1602
1825 1621
1826 1640
1827 1659
1828 1679
1829 1698
1830 1718
1831 1739
1832 1759
1833 1780
1834 1801
1835 1822
1836 1843
1837 1865
1838 1887
1839 1909
1840 1931
1841 1954
1842 1977
1843 2000
1844 2023
1845 2047
1846 2071
1847 2096
1848 2120
1849 2145
1850 2170
1851 2196
1852 2221
1853 2248
1854 2274
1855 2301
1856 2328
1857 2355
1858 2383
1859 2411
1860 2439
1861 2467
1862 2496
1863 2526
1864 2555
1865 2585
1866 2616
1867 2646
1868 2677
1869 2709
1870 2741
1871 2773
1872 2805
1873 2838
1874 2872
1875 2905
1876 2940
1877 2974
1878 3009
1879 3044
1880 3080
1881 3116
1882 3153
1883 3190
1884 3227
1885 3265
1886 3303
1887 3342
1888 3381
1889 3421
1890 3461
1891 3502
1892 3543
1893 3585
1894 3627
1895 3669
1896 3712
1897 3756
1898 3800
1899 3845
1900 3890
1901 3935
1902 3982
1903 4028
1904 4076
1905 4123
1906 4172
1907 4221
1908 4270
1909 4321
1910 4371
1911 4423
1912 4475
1913 4527
1914 4705
1915 4889
1916 5081
1917 5280
1918 5487
1919 5702
1920 5926
1921 6159
1922 6400
1923 6651
1924 6912
1925 7183
1926 7465
1927 7758
1928 8062
1929 8378
1930 8707
1931 9048
1932 9403
1933 9772
1934 10160
1935 10550
1936 10970
1937 11400
1938 11840
1939 12310
1940 12790
1941 13290
1942 13820
1943 14360
1944 14920
1945 15510
1946 16110
1947 16750
1948 17400
1949 18080
1950 18790
1951 17490
1952 18500
1953 19020
1954 18680
1955 19400
1956 20270
1957 21370
1958 21420
1959 21360
1960 22060
1961 22750
1962 22870
1963 22970
1964 24890
1965 24980
1966 24970
1967 24740
1968 25810
1969 28540
1970 28790
1971 29270
1972 30840
1973 33030
1974 34140
1975 31580
1976 32170
1977 32650
1978 33830
1979 34720
1980 34890
1981 34640
1982 34970
1983 36000
1984 38230
1985 39300
1986 43070
1987 44570
1988 48260
1989 52600
1990 54840
1991 59080
1992 59210
1993 60760
1994 62350
1995 62190
1996 63280
1997 67950
1998 72040
1999 76640
2000 82540
2001 82550
2002 83180
2003 84330
2004 86880
2005 90410
2006 93420
2007 97960
2008 95550
2009 90000
2010 90910
2011 90300
2012 88090
2013 88090
2014 88200
2015 88120
2016 88130
2017 88360
2018 88530
2019 88760