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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Slates & boards, with writing/drawing surfaces, whether or not framed | $211,515 | $284,375 | $1,328,821 | $714,998 | $432,642 | $418,215 | $516,336 |
| Total | $211,515 | $284,375 | $1,328,821 | $714,998 | $432,642 | $418,215 | $516,336 |
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