Year	Total
1965	4108900
1966	4697000
1967	5657400
1968	7035300
1969	6918000
1970	7506800
1971	6512000
1972	8167000
1973	7676000
1974	7560000
1975	7386000
1976	8781000
1977	8811000
1978	9049000
1979	9648000
1980	9576000
1981	11029000
1982	10724000
1983	11358000
1984	11927000
1985	12140000
1986	14092000
1987	14784000
1988	17125000
1989	19553000
1990	23322000
1991	23743000
1992	24612000
1993	26636000
1994	30647000
1995	31976000
1996	32271000
1997	33966000
1998	34367000
1999	33995000
2000	36235000
2001	38933000
2002	37877000
2003	35202000
2004	39036000
2005	41399000
2006	44491000
2007	48284000
2008	51383000
2009	55465000
2010	60949000
2011	63695000
2012	63368000
2013	64152000
2014	65780000
2015	69407000
2016	72182000