Year	Total
1965	1265000
1966	1447000
1967	3445000
1968	4641000
1969	5027000
1970	5423000
1971	5795000
1972	6303000
1973	7597000
1974	10202000
1975	11315000
1976	11324000
1977	11267000
1978	10600000
1979	9798000
1980	8895000
1981	7652000
1982	7792000
1983	7869000
1984	8730000
1985	8626000
1986	8295000
1987	7729000
1988	8892000
1989	10227000
1990	13493000
1991	14708000
1992	14452000
1993	15223000
1994	16837000
1995	17756000
1996	18250000
1997	18194000
1998	16848000
1999	16975000
2000	13819000
2001	13082000
2002	12782000
2003	13681000
2004	13669000
2005	13498000
2006	12080000
2007	12261000
2008	11995000
2009	12034000
2010	12433000
2011	12533000
2012	12667000
2013	11584000
2014	11584000
2015	11465000
2016	11368000