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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium | $5,471,856 | $5,656,774 | $6,660,660 | $6,972,329 | $8,042,268 | $13,110,880 | $13,436,638 |
| Alkali/alkaline-earth metals other than sodium & calcium | $2,698,964 | $5,384,306 | $7,623,141 | $13,434,461 | $2,887,931 | $6,662,103 | $5,499,644 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $680,092 | $700,480 | $1,154,752 | $1,237,797 | $1,791,144 | $3,171,240 | $3,989,902 |
| Mercury | $2,570,389 | $3,363,466 | $2,088,694 | $1,371,909 | $3,583,390 | $5,553,160 | $12,552,446 |
| Total | $11,421,301 | $15,105,026 | $17,527,247 | $23,016,496 | $16,304,733 | $28,497,383 | $35,478,630 |
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