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	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	20000
2003	80000
2004	574000
2005	1533000
2006	9345371
2007	14021232
2008	17529000
2009	20116876
2010	23264408
2011	25519000
2012	26756000
2013	32450000
2014	33000000
2015	33559000
2016	33447000
2017	33335316