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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium | $7,728,478 | $13,562,458 | $12,337,656 | $16,185,155 | $13,744,354 | $20,840,267 | $23,256,492 |
| Alkali/alkaline-earth metals other than sodium & calcium | $5,670,211 | $8,140,975 | $9,819,801 | $13,427,976 | $14,015,644 | $16,446,463 | $20,650,308 |
| Rare-earth metals, scandium & yttrium, whether or not intermixed/interalloy ... | $5,086,501 | $6,186,832 | $6,632,248 | $5,299,372 | $4,976,530 | $16,129,651 | $70,814,886 |
| Mercury | $2,612,728 | $2,404,794 | $1,442,061 | $1,826,328 | $1,440,757 | $1,388,821 | $971,459 |
| Total | $21,097,918 | $30,295,059 | $30,231,766 | $36,738,831 | $34,177,285 | $54,805,202 | $115,693,145 |
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