Year	Total
1965	70472
1966	75516
1967	81534
1968	91245
1969	101110
1970	116650
1971	136000
1972	179000
1973	280000
1974	388000
1975	629000
1976	931000
1977	1393000
1978	1520000
1979	2078000
1980	5082000
1981	5553000
1982	6168000
1983	6190000
1984	7105000
1985	8874000
1986	10731000
1987	11712000
1988	14021000
1989	14706000
1990	15392000
1991	19055000
1992	19194000
1993	19861000
1994	20857000
1995	20846000
1996	20165000
1997	20514000
1998	20407000
1999	19899000
2000	19666000
2001	19394000
2002	20026000
2003	22168000
2004	23989000
2005	24971000
2006	26874000
2007	28712000
2008	30165000
2009	28932000
2010	30742000
2011	33234000
2012	35006000
2013	35544000
2014	38628000
2015	40861000
2016	43467000