Year	Total
1970	559000
1971	815000
1972	1017000
1973	1442000
1974	1778000
1975	1871000
1976	1961000
1977	2127000
1978	2337000
1979	2591000
1980	2103000
1981	1950000
1982	3079000
1983	3227000
1984	3325000
1985	4059000
1986	4647000
1987	4515000
1988	4796000
1989	4989000
1990	5225000
1991	4981000
1992	5820000
1993	6234000
1994	6382000
1995	6488000
1996	6681000
1997	7173000
1998	7542000
1999	7804000
2000	7889000
2001	8215000
2002	8512000
2003	8665000
2004	8782000
2005	9638800
2006	10197000
2007	10609000
2008	11385000
2009	11495000
2010	11775000
2011	11960000
2012	12365000
2013	13223000
2014	13923000
2015	13980000
2016	13909000