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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $146,933,938 | 175,781,209 | 175,781,209 |
| 2006 | $185,454,862 | 214,373,024 | 214,373,024 |
| 2007 | $616,328,022 | 686,819,804 | 686,819,804 |
| 2008 | $2,135,939,226 | 1,798,473,941 | 1,798,473,941 |
| 2009 | $1,185,108,730 | 1,180,277,121 | 1,180,277,121 |
| 2010 | $1,318,527,278 | 1,440,388,129 | 1,440,388,129 |
| 2011 | $2,107,469,806 | 1,957,989,080 | 1,957,989,080 |
Note: Quantity represents Weight in kilograms
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