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	1547
1996	2721
1997	4550
1998	8260
1999	28190
2000	98853
2001	121200
2002	139092
2003	241000
2004	464354
2005	949559
2006	1663328
2007	2639026
2008	3539003
2009	4406682
2010	5446991
2011	8164553
2012	10524676
2013	10395801
2014	10114867
2015	11557725
2016	12017034
2017	13438539