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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $325,059,000 | 1,037,482,275 | 1,037,482,275 |
| 2006 | $364,600,000 | 917,410,076 | 917,410,076 |
| 2007 | $374,938,000 | 790,548,936 | 790,548,936 |
| 2008 | $500,654,000 | 1,017,752,531 | 1,017,752,531 |
| 2009 | $210,935,000 | 518,495,229 | 518,495,229 |
| 2010 | $283,064,406 | 661,458,894 | 661,458,894 |
| 2011 | $325,758,071 | 662,304,623 | 662,304,623 |
Note: Quantity represents Weight in kilograms
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