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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Nitrites | $76,913 | $96,669 | $110 | $15,971 | $558 | $2,444 | $6,647 |
| Nitrates of potassium | $159 | $7,173 | $10,291 | $24,317 | $4,764 | $23,283 | $83,706 |
| Nitrates other than of potassium | $1,171 | $2,464 | $1,382 | $9,079 | $3,876 | $6,175 | $36,479 |
| Total | $78,243 | $106,306 | $11,783 | $49,367 | $9,198 | $31,902 | $126,832 |
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