Year	Total
1960	2668000
1961	3144000
1962	3334000
1963	3256000
1964	3702000
1965	3992000
1966	3911000
1967	4238000
1968	4191000
1969	3597000
1970	3567000
1971	4472000
1972	4621000
1973	5148000
1974	4924000
1975	4957000
1976	4715000
1977	4600000
1978	4966000
1979	5252000
1980	5062000
1981	5138000
1982	4735000
1983	5464000
1984	5839000
1985	6104000
1986	5239000
1987	6178000
1988	6008000
1989	6169000
1990	6234000
1991	5437000
1992	6391000
1993	6419000
1994	5082000
1995	5856000
1996	4449000
1997	5938000
1998	6449000
1999	6164000
2000	6757000
2001	6798000
2002	5706000
2003	4604000
2004	5170000
2005	6260000
2006	5307000
2007	5689000
2008	5939000
2009	5662000
2010	5709000
2011	5698000