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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Multiple-walled insulating units of glass | $15,794,411 | $19,563,227 | $23,750,020 | $26,814,663 | $22,118,054 | $18,925,031 | $18,916,183 |
| Total | $15,794,411 | $19,563,227 | $23,750,020 | $26,814,663 | $22,118,054 | $18,925,031 | $18,916,183 |
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