|
| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Coal gas, water gas, producer gas & sim. gases (excl. petroleum gases & oth ... | $338,479 | $375,975 | $370,275 | $577,168 | $626,983 | $658,852 | $587,041 |
| Total | $338,479 | $375,975 | $370,275 | $577,168 | $626,983 | $658,852 | $587,041 |
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