Year Measure 1800 1296 1801 1296 1802 1296 1803 1296 1804 1296 1805 1296 1806 1296 1807 1296 1808 1296 1809 1296 1810 1296 1811 1296 1812 1296 1813 1296 1814 1296 1815 1296 1816 1296 1817 1296 1818 1296 1819 1296 1820 1296 1821 1299 1822 1302 1823 1305 1824 1307 1825 1310 1826 1313 1827 1315 1828 1318 1829 1321 1830 1324 1831 1326 1832 1329 1833 1332 1834 1335 1835 1337 1836 1340 1837 1343 1838 1346 1839 1349 1840 1351 1841 1354 1842 1357 1843 1360 1844 1363 1845 1365 1846 1368 1847 1371 1848 1374 1849 1377 1850 1380 1851 1382 1852 1385 1853 1388 1854 1391 1855 1394 1856 1397 1857 1400 1858 1403 1859 1406 1860 1408 1861 1411 1862 1414 1863 1417 1864 1420 1865 1423 1866 1426 1867 1429 1868 1432 1869 1435 1870 1438 1871 1478 1872 1519 1873 1562 1874 1605 1875 1650 1876 1696 1877 1743 1878 1792 1879 1842 1880 1893 1881 1946 1882 2000 1883 2056 1884 2113 1885 2172 1886 2233 1887 2295 1888 2359 1889 2425 1890 2492 1891 2562 1892 2633 1893 2707 1894 2782 1895 2860 1896 2939 1897 3021 1898 3106 1899 3192 1900 3281 1901 3614 1902 3416 1903 2939 1904 2840 1905 3144 1906 3534 1907 3222 1908 3701 1909 3742 1910 4065 1911 3641 1912 3115 1913 2695 1914 3222 1915 3286 1916 2717 1917 3764 1918 2943 1919 3339 1920 2875 1921 3247 1922 4290 1923 4393 1924 4298 1925 4842 1926 3997 1927 2956 1928 3512 1929 4945 1930 4538 1931 3342 1932 2909 1933 4114 1934 4854 1935 5469 1936 5433 1937 5902 1938 5004 1939 5820 1940 5773 1941 5725 1942 5678 1943 5631 1944 5585 1945 5539 1946 5493 1947 5448 1948 5403 1949 5359 1950 5315 1951 5011 1952 3483 1953 4156 1954 4763 1955 4381 1956 4821 1957 4277 1958 4286 1959 4818 1960 5154 1961 5691 1962 5528 1963 5878 1964 5757 1965 6290 1966 6810 1967 7488 1968 8374 1969 9382 1970 10520 1971 11590 1972 12930 1973 14130 1974 14750 1975 14990 1976 15850 1977 16860 1978 18090 1979 19560 1980 21220 1981 22240 1982 22820 1983 24470 1984 26040 1985 25630 1986 26200 1987 28370 1988 30900 1989 33070 1990 34810 1991 36080 1992 37260 1993 40680 1994 44080 1995 46320 1996 48040 1997 50420 1998 48010 1999 51120 2000 55410 2001 52520 2002 54190 2003 55700 2004 59870 2005 62400 2006 65010 2007 67200 2008 66350 2009 64670 2010 72690 2011 74590 2012 74170 2013 75950 2014 77650 2015 79610 2016 81710 2017 83850 2018 86130 2019 88530