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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 | $210,214,563 | $211,205,988 | $208,161,712 | $205,403,208 | $189,863,653 | $267,275,830 | $275,929,005 |
| Total | $210,214,563 | $211,205,988 | $208,161,712 | $205,403,208 | $189,863,653 | $267,275,830 | $275,929,005 |
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