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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Nitrites | $2,704 | $2,435 | $3,719 | $463 | $2,919 | | $2,610 |
| Nitrates of potassium | $1,872 | $22,040 | $19,457 | $54,768 | $54,309 | $59,486 | $46,301 |
| Nitrates other than of potassium | $3,017 | $7,875 | $9,934 | $13,803 | $57,425 | $61,680 | $53,899 |
| Total | $7,593 | $32,350 | $33,110 | $69,034 | $114,653 | $121,166 | $102,810 |
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