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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 | $30,051,954 | $42,326,589 | $33,323,464 | $40,030,718 | $29,917,572 | $43,166,064 | $55,701,293 |
| Total | $30,051,954 | $42,326,589 | $33,323,464 | $40,030,718 | $29,917,572 | $43,166,064 | $55,701,293 |
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