Year	Total
1965	5721000
1966	6923000
1967	7249000
1968	8224000
1969	9563000
1970	10763000
1971	11138000
1972	11865000
1973	13272000
1974	11561000
1975	11943000
1976	12826000
1977	12507000
1978	12545000
1979	13302000
1980	12794000
1981	12251000
1982	11314000
1983	10504000
1984	10648000
1985	10754000
1986	11250000
1987	11184000
1988	11033000
1989	11011000
1990	11304000
1991	11199000
1992	11045000
1993	10626000
1994	11074000
1995	10206000
1996	10412000
1997	10299000
1998	10777000
1999	10863000
2000	10902000
2001	10669000
2002	11120000
2003	11470000
2004	10693000
2005	11091000
2006	10673000
2007	10810000
2008	10651000
2009	10060000
2010	10551000
2011	9710800
2012	9141800
2013	9011800
2014	8632100
2015	8742400
2016	8998500