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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $420,663,953 | 173,808,467 | 173,808,467 |
| 2006 | $558,364,352 | 245,706,550 | 245,706,550 |
| 2007 | $714,414,422 | 272,321,897 | 272,321,897 |
| 2008 | $876,072,014 | 282,025,064 | 282,025,064 |
| 2009 | $870,340,805 | 338,175,447 | 338,175,447 |
| 2010 | $940,631,323 | 296,668,535 | 296,668,535 |
| 2011 | $1,136,488,381 | 336,043,011 | 336,043,011 |
Note: Quantity represents Weight in kilograms
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