|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical energy (optional heading) | $162,722,000 | $280,890,000 | $716,310,000 | $995,550,000 | $773,000,000 | $696,546,000 | $1,097,104,000 |
| Total | $162,722,000 | $280,890,000 | $716,310,000 | $995,550,000 | $773,000,000 | $696,546,000 | $1,097,104,000 |
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