Year	Total
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	209000
1985	1010000
1986	1713000
1987	2183000
1988	2156000
1989	2765000
1990	2823000
1991	3547200
1992	3694900
1993	4053500
1994	4392000
1995	4755500
1996	5778600
1997	7073900
1998	6808700
1999	6979900
2000	7337700
2001	7543900
2002	7544200
2003	7168300
2004	8487400
2005	9383500
2006	9323300
2007	8267600
2008	9019900
2009	7529500
2010	7339600
2011	5896100
2012	5151500
2013	4276500
2014	4127800
2015	4121700
2016	4041700