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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $395,729,293 | 1,312,637,558 | 1,312,637,558 |
| 2006 | $490,064,239 | 1,722,869,722 | 1,722,869,722 |
| 2007 | $658,358,444 | 1,899,025,640 | 1,899,025,640 |
| 2008 | $586,768,324 | 1,974,867,220 | 1,974,867,220 |
| 2009 | $322,476,230 | 889,492,121 | 889,492,121 |
| 2010 | $508,011,483 | 1,175,408,391 | 1,175,408,391 |
| 2011 | $497,924,461 | 906,991,918 | 906,991,918 |
Note: Quantity represents Weight in kilograms
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