Year	Total
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	1000
1994	6500
1995	20920
1996	26588
1997	70000
1998	127000
1999	350000
2000	738000
2001	1550000
2002	2597548
2003	3500869
2004	4729731
2005	6244922
2006	8253416
2007	9897477
2008	10429012
2009	10454822
2010	10199942
2011	10475083
2012	10780732
2013	10486824
2014	9486927
2015	9194633
2016	8973869
2017	8532908