Year Measure
1800 1923
1801 1927
1802 1930
1803 1934
1804 1937
1805 1941
1806 1944
1807 1948
1808 1952
1809 1955
1810 1959
1811 1962
1812 1966
1813 1970
1814 1973
1815 1977
1816 1981
1817 1984
1818 1988
1819 1992
1820 1995
1821 2119
1822 1961
1823 1950
1824 1902
1825 1911
1826 1967
1827 1976
1828 1850
1829 1951
1830 1911
1831 1894
1832 2028
1833 2023
1834 1994
1835 2095
1836 2131
1837 2152
1838 2195
1839 2156
1840 2316
1841 2247
1842 2199
1843 2277
1844 2341
1845 2420
1846 2568
1847 2795
1848 2177
1849 2168
1850 2273
1851 2230
1852 2519
1853 2796
1854 3130
1855 3295
1856 3415
1857 3292
1858 3068
1859 3069
1860 3263
1861 3327
1862 3441
1863 3532
1864 3589
1865 3522
1866 3664
1867 3605
1868 3849
1869 3609
1870 3481
1871 3641
1872 3833
1873 3779
1874 3935
1875 3854
1876 3805
1877 3787
1878 3574
1879 3536
1880 3748
1881 3987
1882 4121
1883 3940
1884 3733
1885 3622
1886 3574
1887 3602
1888 3685
1889 3695
1890 3830
1891 3871
1892 3952
1893 3802
1894 4170
1895 4084
1896 4212
1897 4088
1898 4328
1899 4479
1900 4535
1901 4309
1902 4254
1903 4392
1904 4476
1905 4587
1906 4520
1907 4881
1908 4860
1909 5012
1910 4767
1911 5250
1912 5684
1913 5633
1914 4722
1915 4157
1916 4763
1917 4717
1918 4040
1919 4454
1920 4758
1921 4519
1922 5414
1923 5665
1924 6282
1925 6321
1926 6532
1927 6394
1928 6766
1929 7336
1930 7078
1931 6760
1932 6163
1933 6342
1934 6118
1935 5964
1936 6046
1937 6184
1938 6027
1939 6274
1940 4950
1941 4787
1942 4818
1943 4805
1944 3678
1945 4524
1946 6039
1947 6360
1948 7131
1949 7512
1950 8065
1951 8454
1952 8596
1953 8769
1954 9153
1955 9601
1956 10060
1957 10590
1958 10830
1959 11050
1960 11790
1961 12310
1962 12910
1963 13380
1964 14110
1965 14660
1966 15300
1967 15900
1968 16450
1969 17470
1970 18320
1971 19020
1972 19690
1973 20610
1974 21110
1975 20960
1976 21760
1977 22370
1978 23020
1979 23730
1980 24040
1981 24250
1982 24810
1983 25240
1984 25540
1985 25950
1986 26480
1987 26980
1988 28110
1989 28940
1990 29470
1991 29700
1992 30020
1993 29710
1994 30290
1995 30810
1996 31130
1997 31750
1998 32750
1999 33700
2000 34760
2001 35190
2002 35320
2003 35360
2004 36080
2005 36380
2006 36990
2007 37630
2008 37490
2009 36200
2010 36730
2011 37310
2012 37140
2013 37070
2014 37280
2015 37680
2016 38150
2017 38670
2018 39230
2019 39800