Year	Total
1965	3022000
1966	4647000
1967	5667000
1968	5853000
1969	6723000
1970	6809000
1971	7185000
1972	7373000
1973	7198000
1974	7490000
1975	8283000
1976	8659000
1977	10185000
1978	11271000
1979	12839000
1980	9399000
1981	14975000
1982	19881000
1983	25356000
1984	28194000
1985	30202000
1986	31622000
1987	30684000
1988	32286000
1989	34449000
1990	34171000
1991	32180000
1992	29186000
1993	27875000
1994	32378000
1995	36647000
1996	34800000
1997	35585000
1998	34695000
1999	34614000
2000	34164000
2001	34088000
2002	35242000
2003	35387000
2004	36338000
2005	34924000
2006	36045000
2007	36440000
2008	37797000
2009	37998000
2010	41270000
2011	42881000
2012	42548000
2013	42470000
2014	41640000
2015	41172000
2016	40221000