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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Piezo-elec. quartz | $1,554,000 | $3,192,000 | $3,891,000 | $4,571,000 | $2,641,000 | $1,385,967 | $974,012 |
| Synthetic/reconstructed precious/semi-precious stones (excl. piezo-electric ... | $1,251,000 | $3,507,000 | $2,921,000 | $3,482,000 | $2,629,000 | $6,711,209 | $10,283,222 |
| Synthetic/reconstructed precious/semi-precious stones, wkd./graded...; ungr ... | $23,097,000 | $22,481,000 | $20,636,000 | $21,581,000 | $21,056,000 | $18,713,210 | $19,276,578 |
| Total | $25,902,000 | $29,180,000 | $27,448,000 | $29,634,000 | $26,326,000 | $26,810,386 | $30,533,812 |
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