Year	Total attacks	Fatal attacks
1970	458	26
1971	237	16
1972	60	7
1973	54	25
1974	75	11
1975	141	8
1976	104	4
1977	121	4
1978	57	5
1979	50	9
1980	52	12
1981	53	7
1982	60	7
1983	40	5
1984	57	3
1985	35	3
1986	30	
1987	27	1
1988	20	
1989	35	3
1990	26	4
1991	24	2
1992	31	2
1994	56	8
1995	62	4
1996	36	3
1997	41	2
1998	25	3
1999	53	4
2000	33	
2001	39	9
2002	34	2
2003	31	
2004	9	
2005	23	
2006	6	1
2007	8	
2008	18	1
2009	11	5
2010	17	3
2011	10	1