Incident Type	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011
Fixed	11,813	12,441	11,917	11,975	12,975	13,017	13,621	11,913	10,909	10,123	11,055	10,485
Unknown Sheen	4,016	4,147	3,426	3,733	3,411	3,934	3,797	4,199	4,278	4,254	5,882	4,638
Vessel	3,945	4,378	3,919	3,962	4,385	4,611	4,767	4,931	5,030	4,597	4,785	4,527
Mobile	3,597	3,216	2,942	2,947	3,192	3,215	3,267	3,297	3,238	2,854	2,915	3,034
Pipeline	1,618	1,841	1,621	1,643	1,574	1,896	1,839	1,580	1,379	1,275	1,148	1,144
Platform	1,428	1,355	1,233	1,344	1,198	1,395	1,606	1,407	1,362	1,761	1,317	1,057
Storage Tank	1,379	3,140	3,044	2,808	2,838	2,687	2,577	2,519	2,460	1,973	2,109	1,919
Railroad Non-Release	1,335	1,235	1,124	1,173	1,476	1,685	1,868	1,913	1,482	1,435	1,536	1,638
Railroad	1,332	1,241	1,200	1,074	1,276	1,532	1,451	1,390	1,649	1,306	1,372	1,583
Continuous	938	238	393	462	112	189	150	284	62	94	58	51
Aircraft	248	297	278	262	277	211	217	214	204	175	165	173
Drill/Exercise	669	789	908	743	1,073	1,223	1,578	1,584	1,829	2,039	1,944	2,380
Unknown	84	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Terrorist Non-Release	33	42	180	105	125	119	117	43	0	0	0	0
TOTAL INCIDENTS	32,435	34,360	32,185	32,231	33,912	35,714	36,855	35,274	33,882	31,886	34,286	32,629