Year	Total
1965	25286000
1966	27384000
1967	27999000
1968	30111000
1969	32899000
1970	36510000
1971	35988000
1972	40060000
1973	41290000
1974	35387000
1975	34828000
1976	39180000
1977	37596000
1978	38365000
1979	41510000
1980	38793000
1981	36220000
1982	31506000
1983	29737000
1984	29352000
1985	29590000
1986	32800000
1987	33004000
1988	35096000
1989	34618000
1990	36211000
1991	35725000
1992	37318000
1993	37060000
1994	37248000
1995	38676000
1996	38318000
1997	40288000
1998	40525000
1999	41458000
2000	42668000
2001	44848000
2002	44658000
2003	45058000
2004	47072000
2005	50058000
2006	50770000
2007	50657000
2008	47287000
2009	45919000
2010	45874000
2011	46077000
2012	43705000
2013	41437000
2014	39621000
2015	38734000
2016	39945000