Year	Total
1970	76500
1971	76500
1972	63900
1973	51300
1974	54000
1975	45000
1976	342000
1977	414000
1978	666000
1979	1008000
1980	1962000
1981	2196000
1982	2403000
1983	2817000
1984	3618000
1985	4437000
1986	5112000
1987	5652000
1988	6228000
1989	6966000
1990	7263000
1991	8172000
1992	8838000
1993	10161000
1994	10890000
1995	11250000
1996	11970000
1997	12240000
1998	12600000
1999	15120000
2000	18900000
2001	22680000
2002	24570000
2003	27090000
2004	29700000
2005	38250000
2006	49230000
2007	50121000
2008	53073000
2009	56421000
2010	55188000
2011	55303000
2012	54793000
2013	50461000
2014	43912000
2015	39825000
2016	37638000