The following table appears on the CAIN (Conflict Archive on the INternet) web site:
http://cain.ulst.ac.uk/ni/security/security.htm
Table NI-SEC-07:  Firearms, and Explosive Finds in Northern Ireland (only), 1969-2003			
Year	Firearms found (number)	Explosives found (kg)	
1969  1	14	102	
1970	324	305	
1971	716	1,246	
1972	1,259	18,819	
1973	1,313	17,426	
1974	1,236	11,848	
1975	820	4,996	
1976	736	9,849	
1977	563	1,728	
1978	393	956	
1979	300	905	
1980	203	821	
1981	357	3,419	
1982	288	2,298	
1983	166	1,706	
1984	187	3,871	
1985	173	3,344	
1986	174	2,443	
1987	206	5,885	
1988	489	4,728	
1989	246	1,377	
1990	179	1,969	
1991	164	4,167	
1992	194	2,167	
1993	196	3,944	
1994	178	1,285	
1995	118	5	
1996	98	1,677	
1997	105	1,258	
1998	88	883	
1999	113	89	
2000	134	311	
2001	97	117	
2002	125	8	
2003 (to 30/06/03) 2	73	17	
Grand totals	12025	115969	
Notes:	
1. Statistics for 1969 are for the period August to December only			
2. Statistics for 2003 are provisional and may be subject to amendment			
Sources:	
Police Service of Northern Ireland (PSNI): Firearms and Explosives Finds, 1969-2003 (By Calendar Year); http://www.psni.police.uk/finds_cy-4-2.doc 			
Northern Ireland Annual Abstract of Statistics 2002; Table 6.2			
Table also available as:	
Rich Text Format (RTF) Document; Microsoft Excel Document