Year	Total
1965	3494900
1966	3822700
1967	3981500
1968	4190300
1969	4453100
1970	4697600
1971	5206000
1972	5520000
1973	5251000
1974	5025000
1975	4378000
1976	4649000
1977	4756000
1978	5214000
1979	5256000
1980	5314000
1981	5492000
1982	4845000
1983	4708000
1984	4713000
1985	4589000
1986	4911000
1987	5127000
1988	5648000
1989	6245000
1990	6594000
1991	7356600
1992	7968000
1993	8684000
1994	9328500
1995	10257000
1996	10894000
1997	11699000
1998	11967000
1999	12086000
2000	11816000
2001	11224000
2002	11740000
2003	11321000
2004	12016000
2005	12461000
2006	13930000
2007	17902000
2008	18606000
2009	18188000
2010	16015000
2011	17557000
2012	17470000
2013	16835000
2014	17379000
2015	17638000
2016	17753000