|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical energy (optional heading) | $454,219,000 | $692,505,000 | $843,753,000 | $1,327,947,000 | $1,329,237,000 | $1,100,765,000 | $1,569,171,000 |
| Total | $454,219,000 | $692,505,000 | $843,753,000 | $1,327,947,000 | $1,329,237,000 | $1,100,765,000 | $1,569,171,000 |
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