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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Sodium sulphides | $2,721,698 | $3,501,595 | $8,325,703 | $2,422,769 | $1,686,052 | $4,371,355 | $3,308,009 |
| Zinc sulphide | $42,892 | $39,672 | | | | | |
| Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ... | $3,782,493 | $2,886,445 | $1,327,354 | $2,650,748 | $2,991,949 | $2,607,278 | $3,057,315 |
| Total | $6,547,083 | $6,427,712 | $9,653,057 | $5,073,517 | $4,678,001 | $6,978,633 | $6,365,324 |
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