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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $320,407,411 | 737,537,568 | 737,537,568 |
| 2006 | $324,400,481 | 626,221,898 | 626,221,898 |
| 2007 | $357,577,433 | 601,370,680 | 601,370,680 |
| 2008 | $388,205,672 | 507,522,114 | 507,522,114 |
| 2009 | $355,495,959 | 707,358,882 | 707,358,882 |
| 2010 | $364,113,693 | 532,538,072 | 532,538,072 |
| 2011 | $344,029,333 | 412,152,498 | 412,152,498 |
Note: Quantity represents Weight in kilograms
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