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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Nitrites | $94 | $5,124 | $3,540 | $13 | $11,604 | $10,800 | $18,756 |
| Nitrates of potassium | $3,446 | $60,536 | $21,324 | $418 | $408 | $7,026 | $25,526 |
| Nitrates other than of potassium | $6,817 | $12,431 | $15,580 | $9,845 | $1,452 | $11,544 | $8,306 |
| Total | $10,357 | $78,091 | $40,444 | $10,276 | $13,464 | $29,370 | $52,588 |
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