Year	Total
1965	4176000
1966	4556000
1967	5145000
1968	5883000
1969	6303000
1970	7183000
1971	8319000
1972	8164000
1973	9597000
1974	8977000
1975	9684000
1976	9954000
1977	10890000
1978	11223000
1979	11589000
1980	10881000
1981	10225000
1982	9841000
1983	10290000
1984	8396000
1985	7445000
1986	7830000
1987	9103000
1988	9808000
1989	10999000
1990	11486000
1991	11125000
1992	13680000
1993	14085000
1994	14896000
1995	16796000
1996	17535000
1997	18842000
1998	19054000
1999	18020000
2000	16576000
2001	16485000
2002	15571000
2003	15487000
2004	15942000
2005	14806000
2006	13286000
2007	13840000
2008	13262000
2009	13952000
2010	14611000
2011	13798000
2012	14371000
2013	14932000
2014	16055000
2015	18312000
2016	19916000