Year	Total
1965	6120000
1966	5894000
1967	5670000
1968	5993000
1969	6393000
1970	6790000
1971	7029000
1972	7584000
1973	9055000
1974	9468000
1975	10863000
1976	11723000
1977	14096000
1978	15534000
1979	16919000
1980	18941000
1981	21073000
1982	21801000
1983	21448000
1984	22903000
1985	22550000
1986	23838000
1987	24828000
1988	26101000
1989	27600000
1990	31719000
1991	33591000
1992	36214000
1993	38012000
1994	39051000
1995	41548000
1996	44103000
1997	48869000
1998	46541000
1999	48672000
2000	54311000
2001	55165000
2002	57569000
2003	58266000
2004	62060000
2005	61501000
2006	58458000
2007	61776000
2008	60093000
2009	60813000
2010	64684000
2011	73078000
2012	74415000
2013	74463000
2014	75262000
2015	71789000
2016	72588000