Year Measure
1820 975.1
1821 985.6
1822 996.2
1823 1007
1824 1018
1825 1029
1826 1040
1827 1051
1828 1062
1829 1074
1830 1085
1831 1097
1832 1109
1833 1121
1834 1133
1835 1145
1836 1157
1837 1170
1838 1182
1839 1195
1840 1208
1841 1221
1842 1234
1843 1247
1844 1261
1845 1275
1846 1288
1847 1302
1848 1316
1849 1330
1850 1345
1851 1359
1852 1374
1853 1389
1854 1403
1855 1419
1856 1434
1857 1449
1858 1465
1859 1481
1860 1497
1861 1513
1862 1529
1863 1546
1864 1562
1865 1579
1866 1596
1867 1613
1868 1631
1869 1648
1870 1666
1871 1695
1872 1689
1873 1766
1874 1819
1875 1811
1876 1782
1877 1820
1878 1887
1879 1998
1880 2116
1881 2121
1882 1893
1883 1820
1884 1842
1885 1881
1886 1887
1887 1856
1888 1920
1889 2002
1890 2086
1891 2136
1892 2273
1893 2420
1894 2447
1895 2394
1896 2441
1897 2426
1898 2353
1899 2350
1900 2440
1901 2545
1902 2615
1903 2615
1904 2618
1905 2797
1906 2859
1907 2970
1908 2946
1909 2913
1910 3119
1911 3251
1912 3274
1913 3421
1914 3345
1915 3282
1916 2893
1917 2831
1918 2664
1919 3084
1920 2600
1921 2858
1922 3206
1923 3031
1924 3230
1925 3222
1926 3468
1927 3807
1928 3952
1929 4179
1930 4618
1931 4546
1932 4339
1933 4784
1934 4817
1935 4639
1936 4628
1937 4803
1938 4803
1939 5338
1940 5615
1941 6365
1942 7338
1943 7734
1944 8366
1945 8896
1946 9127
1947 9918
1948 9927
1949 9547
1950 9117
1951 8786
1952 8549
1953 9659
1954 10350
1955 11130
1956 11160
1957 10870
1958 11520
1959 11490
1960 11630
1961 11440
1962 12170
1963 13200
1964 14270
1965 15050
1966 16120
1967 15670
1968 14630
1969 14890
1970 15920
1971 17800
1972 18580
1973 19610
1974 20440
1975 20350
1976 21380
1977 23120
1978 24290
1979 25240
1980 26390
1981 27200
1982 27370
1983 26470
1984 27310
1985 28020
1986 29530
1987 31670
1988 31100
1989 30960
1990 31020
1991 30980
1992 29580
1993 29440
1994 30520
1995 30400
1996 31790
1997 33010
1998 34410
1999 35340
2000 36570
2001 37440
2002 36660
2003 37570
2004 40320
2005 41910
2006 42780
2007 44510
2008 44610
2009 41280
2010 39190
2011 39910
2012 40330
2013 41190
2014 42140
2015 43250
2016 44320
2017 45400
2018 46240
2019 47110