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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Multiple-walled insulating units of glass | $6,510,784 | $5,300,827 | $18,372,608 | $21,834,978 | $20,151,375 | $20,692,580 | $17,956,281 |
| Total | $6,510,784 | $5,300,827 | $18,372,608 | $21,834,978 | $20,151,375 | $20,692,580 | $17,956,281 |
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