Year	Total
1965	12821000
1966	13075000
1967	13456000
1968	13535000
1969	13546000
1970	13677000
1971	14093000
1972	14428000
1973	14637000
1974	14836000
1975	14980000
1976	15090000
1977	15040000
1978	14114000
1979	12713000
1980	12001000
1981	12134000
1982	12232000
1983	12083000
1984	11943000
1985	11248000
1986	10655000
1987	10034000
1988	9839000
1989	9623000
1990	8136000
1991	7008000
1992	6827000
1993	6929000
1994	6974000
1995	6951000
1996	6852000
1997	6750000
1998	6553000
1999	6379000
2000	6287000
2001	6238000
2002	6072000
2003	5890000
2004	5705000
2005	5437000
2006	4996000
2007	4745000
2008	4719000
2009	4498000
2010	4287000
2011	4222000
2012	3982000
2013	4131000
2014	4052000
2015	4003000
2016	3802000