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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Nitrites | $1,134 | $3,025 | $1,189 | $1,483 | $1,560 | $596 |
| Nitrates of potassium | $9,885 | $39 | $148 | $974 | $11,441 | $7,763 |
| Nitrates other than of potassium | $2,408 | $12,287 | $3,992 | $8,748 | $11,331 | $15,313 |
| Total | $13,427 | $15,351 | $5,329 | $11,205 | $24,332 | $23,672 |
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