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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $77,532,883 | 163,797,518 | 163,797,518 |
| 2006 | $422,715,436 | 576,109,059 | 576,109,059 |
| 2007 | $255,517,976 | 109,470,179 | 109,470,179 |
| 2008 | $688,636,614 | 349,904,146 | 349,904,146 |
| 2009 | $287,882,587 | 401,699,262 | 401,699,262 |
| 2010 | $238,610,619 | 132,124,543 | 132,124,543 |
Note: Quantity represents Weight in kilograms
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