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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,286,393,088 | 573,749,834 | 36,829 |
| 2006 | $3,156,708,667 | 551,786,519 | 47,752 |
| 2007 | $1,216,751,605 | 197,530,243 | 18,014 |
| 2008 | $2,251,935,554 | 237,500,685 | 30,024 |
| 2009 | $2,392,810,472 | 419,239,680 | 30,263 |
| 2010 | $2,935,337,598 | 465,851,338 | 37,196 |
| 2011 | $4,172,495,127 | 788,691,947 | 52,883 |
Note: Quantity represents Number of items
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