Year	Total
1965	11605000
1966	14494000
1967	16138000
1968	16981000
1969	17732000
1970	18080000
1971	21418000
1972	24073000
1973	28391000
1974	25801000
1975	21766000
1976	24323000
1977	21667000
1978	24107000
1979	25203000
1980	23673000
1981	20696000
1982	16876000
1983	15349000
1984	17147000
1985	15318000
1986	17272000
1987	15271000
1988	17647000
1989	19690000
1990	21122000
1991	20403000
1992	23601000
1993	21813000
1994	21348000
1995	21831000
1996	27104000
1997	33273000
1998	33552000
1999	34278000
2000	40229000
2001	40050000
2002	37372000
2003	43836000
2004	49989000
2005	52640000
2006	56772000
2007	57567000
2008	64652000
2009	62556000
2010	71122000
2011	78013000
2012	82206000
2013	80286000
2014	79436000
2015	79115000
2016	79443000