Year	Total
1965	3997000
1966	4418000
1967	4916000
1968	5420000
1969	5819000
1970	6984000
1971	7685000
1972	8419000
1973	9470000
1974	9719000
1975	10725000
1976	11336000
1977	11852000
1978	12261000
1979	12461000
1980	11600000
1981	11431000
1982	10427000
1983	10207000
1984	10818000
1985	10623000
1986	10178000
1987	10270000
1988	9856000
1989	9380000
1990	8447000
1991	7095000
1992	6780000
1993	6873000
1994	7057000
1995	8005000
1996	8369000
1997	7969000
1998	8261000
1999	8198000
2000	7937000
2001	8374000
2002	8143000
2003	8700000
2004	9545000
2005	9935000
2006	9821000
2007	9739000
2008	9906000
2009	9670000
2010	9191000
2011	9034000
2012	8954000
2013	8542000
2014	9063000
2015	8928000
2016	8401500