TABLE 78  Average Volume of Oil Spills by Source: 1991–2000,,
(Gallons),,
,,
Mode or source,Volume of all oil spills (1991-2000),Percent share of all spills (1991-2000)
Maritime," 14,282,220 ",77.2
Facilities," 4,020,880 ",21.7
Maritime nontank vessels and other," 3,353,840 ",18.1
Waterborne tank vessels," 6,907,500 ",37.3
Pipeline," 1,989,949 ",10.8
Non-transportation structures and facilities," 692,099 ",3.7
Unknown and other," 1,261,849 ",6.8
"Highway, aircraft, rail, and other"," 269,920 ",1.5
Total," 18,496,037 ",100.0
"
NOTE: Data are preliminary. ",,
"
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, calculations based on U.S. Coast Guard; Pollution Incidents in and Around U.S. Waters, available at http://www.uscg.mil/hq/g-m/nmc/response/stats/ac.htm, as of September 2002.",,