Year	Total
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	26999
1977	30052
1978	28977
1979	29880
1980	40219
1981	40585
1982	42347
1983	64273
1984	108560
1985	128980
1986	326120
1987	321090
1988	759540
1989	1243300
1990	1369000
1991	1597900
1992	1652800
1993	1635900
1994	1773300
1995	2236100
1996	2382600
1997	3695400
1998	4659800
1999	4619300
2000	4619300
2001	4732800
2002	5235200
2003	5551300
2004	5105500
2005	4943500
2006	5065000
2007	4862400
2008	4781400
2009	5275700
2010	7245000
2011	6377900
2012	5227100
2013	4295100
2014	3971000
2015	3659000
2016	3242100