|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Electrical energy (optional heading) | $157,367,478 | $129,088,087 | $58,057,885 | $37,783,921 | $95,725,956 | $61,291,128 | $133,073,029 |
| Total | $157,367,478 | $129,088,087 | $58,057,885 | $37,783,921 | $95,725,956 | $61,291,128 | $133,073,029 |
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