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	280
1995	264
1996	365
1997	466
1998	345
1999	443
2000	447
2001	489
2002	552
2003	598
2004	644
2005	660
2014	15500
2015	15500