|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical energy (optional heading) | $20,756,896 | $18,973,844 | $9,666,592 | $27,356,973 | $27,938,974 | $15,263,655 | $40,073,047 |
| Total | $20,756,896 | $18,973,844 | $9,666,592 | $27,356,973 | $27,938,974 | $15,263,655 | $40,073,047 |
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