2007 2008 2009 2010 2011
Total energy consumption
(billion BTUs)
146,647 131,028 131,247 136,883 134,970
Energy intensity
(million BTUs per barrel)
1.30 1.22 1.27 1.26 1.27
Energy intensity improvement
(% as compared to year prior)
11.6 6.3 -3.5 0.3 -0.9
Energy return ratio
(million BTUs of SCO product per million BTUs of energy consumed)
4.3 4.6 4.4 4.4 4.4

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