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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $482,754,311 | 864,422,144 | 864,422,144 |
| 2006 | $402,112,140 | 754,995,506 | 754,995,506 |
| 2007 | $508,160,214 | 608,655,681 | 608,655,681 |
| 2008 | $665,062,773 | 547,201,164 | 547,201,164 |
| 2009 | $407,788,619 | 575,699,059 | 575,699,059 |
| 2010 | $978,800,526 | 1,058,790,559 | 1,058,790,559 |
| 2011 | $962,455,680 | 563,030,429 | 563,030,429 |
Note: Quantity represents Weight in kilograms
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