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	20
1997	1290
1998	1606
1999	2926
2000	7638
2001	18894
2002	41899
2003	66466
2004	113246
2005	203620
2006	271053
2007	313539
2008	435627
2009	457770
2010	494351
2011	530449
2012	560547
2013	625161
2014	665818
2015	739790
2016	812128
2017	900120