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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $2,573,400 | $2,726,293 | $3,904,768 | $4,635,675 | $3,905,020 | $4,418,245 | $4,959,737 |
| Zinc sulphide | $131,925 | $98,455 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $1,419,219 | $1,447,942 | $2,042,629 | $3,627,242 | $1,833,927 | $2,616,586 | $3,126,518 |
| Total | $4,124,544 | $4,272,690 | $5,947,397 | $8,262,917 | $5,738,947 | $7,034,831 | $8,086,255 |
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