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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Piezo-elec. quartz | $81,831 | $582,841 | $1,168,733 | $467,279 | $753,226 | $816,376 | $2,299,353 |
| Synthetic/reconstructed precious/semi-precious stones (excl. piezo-electric ... | $1,700,937 | $980,570 | $2,062,790 | $1,575,179 | $1,333,154 | $1,847,457 | $5,143,024 |
| Synthetic/reconstructed precious/semi-precious stones, wkd./graded...; ungr ... | $1,076,160 | $579,952 | $524,686 | $2,296,604 | $2,652,547 | $5,787,486 | $22,276,235 |
| Total | $2,858,928 | $2,143,363 | $3,756,209 | $4,339,062 | $4,738,927 | $8,451,319 | $29,718,612 |
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