Year Total 1800 547900 1801 547900 1802 547900 1803 547900 1804 547900 1805 547900 1806 547900 1807 547900 1808 547900 1809 547900 1810 547900 1811 548000 1812 548300 1813 548600 1814 549100 1815 549600 1816 550300 1817 551100 1818 552000 1819 553000 1820 554200 1821 555400 1822 556800 1823 558300 1824 559900 1825 561600 1826 563500 1827 565400 1828 567500 1829 569700 1830 572000 1831 574500 1832 577000 1833 579400 1834 581900 1835 584400 1836 586900 1837 589400 1838 591900 1839 594500 1840 597000 1841 599600 1842 602100 1843 604700 1844 607300 1845 609900 1846 612500 1847 615100 1848 617800 1849 620400 1850 623100 1851 625800 1852 628500 1853 631300 1854 634100 1855 636800 1856 639600 1857 642400 1858 645200 1859 648000 1860 650900 1861 653700 1862 656600 1863 659400 1864 662300 1865 665200 1866 668100 1867 671100 1868 674000 1869 676900 1870 679900 1871 682900 1872 685900 1873 688800 1874 691800 1875 694900 1876 697900 1877 700900 1878 704000 1879 707100 1880 710100 1881 713200 1882 716300 1883 719500 1884 722600 1885 725700 1886 728900 1887 732100 1888 735300 1889 738500 1890 741700 1891 745000 1892 748200 1893 751500 1894 754800 1895 758100 1896 761400 1897 764700 1898 768100 1899 771400 1900 774800 1901 778200 1902 781600 1903 785000 1904 788400 1905 791900 1906 795300 1907 798800 1908 802300 1909 805800 1910 809300 1911 812800 1912 816400 1913 820000 1914 823500 1915 827100 1916 830800 1917 834400 1918 837900 1919 841500 1920 845100 1921 848300 1922 851100 1923 853500 1924 855900 1925 858300 1926 859500 1927 860600 1928 863100 1929 864200 1930 906800 1931 949400 1932 992000 1933 1035000 1934 1077000 1935 1120000 1936 1162000 1937 1205000 1938 1247000 1939 1290000 1940 1333000 1941 1375000 1942 1418000 1943 1460000 1944 1503000 1945 1545000 1946 1588000 1947 1631000 1948 1673000 1949 1716000 1950 1758000 1951 1773000 1952 1804000 1953 1836000 1954 1869000 1955 1904000 1956 1941000 1957 1978000 1958 2017000 1959 2056000 1960 2096000 1961 2136000 1962 2176000 1963 2217000 1964 2259000 1965 2304000 1966 2352000 1967 2406000 1968 2465000 1969 2530000 1970 2600000 1971 2677000 1972 2757000 1973 2841000 1974 2926000 1975 3013000 1976 3100000 1977 3187000 1978 3273000 1979 3358000 1980 3441000 1981 3522000 1982 3600000 1983 3677000 1984 3753000 1985 3828000 1986 3903000 1987 3979000 1988 4056000 1989 4136000 1990 4220000 1991 4307000 1992 4398000 1993 4494000 1994 4595000 1995 4700000 1996 4810000 1997 4925000 1998 5044000 1999 5166000 2000 5290000 2001 5416000 2002 5543000 2003 5670000 2004 5797000 2005 5924000 2006 6052000 2007 6182000 2008 6313000 2009 6444000 2010 6573000 2011 6698000 2012 6817000 2013 6928000 2014 7033000 2015 7133000