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| Commodity | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Nitrites | $18,730 | $1,255 | $563 | | $1,312 | $174 |
| Nitrates of potassium | $8 | $100 | $71 | $1,387 | $51 | $10,512 |
| Nitrates other than of potassium | $25,727 | $21,282 | $43,490 | $26,776 | $821 | $738 |
| Total | $44,465 | $22,637 | $44,124 | $28,163 | $2,184 | $11,424 |
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