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	1980
2003	4819
2004	7745
2005	11953
2006	18424
2007	30099
2008	50551
2009	80829
2010	102730
2011	115038
2012	122172
2013	125329
2014	128500
2015	184971
2016	178047
2017	173646