Year	Total
1965	2569000
1966	2630000
1967	2904000
1968	3113000
1969	3260000
1970	4516300
1971	5125500
1972	5573300
1973	6125900
1974	6538600
1975	6846000
1976	7179800
1977	7093000
1978	7354100
1979	7874000
1980	8435100
1981	8958400
1982	9357800
1983	9463400
1984	9425500
1985	9089200
1986	9665900
1987	9371300
1988	9770900
1989	12390000
1990	11673000
1991	12246000
1992	13651000
1993	12850000
1994	13048000
1995	14161000
1996	13456000
1997	14487000
1998	15928000
1999	16432000
2000	16000000
2001	16084000
2002	16584000
2003	15633000
2004	15819000
2005	16402000
2006	14609000
2007	14741000
2008	14083000
2009	13150000
2010	12952000
2011	12109000
2012	11016000
2013	11295000
2014	11147000
2015	11508000
2016	11171000