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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Ion-exchangers based on polymers of 39.01-39.13, in primary forms | $32,121,283 | $32,749,642 | $39,109,991 | $40,847,863 | $44,896,363 | $44,527,581 | $48,539,006 |
| Total | $32,121,283 | $32,749,642 | $39,109,991 | $40,847,863 | $44,896,363 | $44,527,581 | $48,539,006 |
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