Table 4. Quantity of oil spilled onshore and offshore per unit of hydrocarbon production (tonnes per million tonnes), 2002-2010.

2002 2003 2004 2005 2006 2007 2008 2009 2010
Onshore 13.1 7.5 6.0 7.9 17.3 10.9 18.5 47.0 7.1
Offshore 0.3 1.8 0.5 0.6 0.4 4.0 3.0 1.6 0.7
Total 5.9 4.5 3.7 4.3 7.6 6.9 8.7 18.8 4.5
Source: Annual reports (2003-2011) of the International Association of Oil and Gas Producers. Environmental Performance in the E&P Industry. London, United Kingdom.