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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $132,905,702 | 84,277,794 | 84,277,794 |
| 2006 | $105,970,898 | 75,487,432 | 75,487,432 |
| 2007 | $260,345,998 | 91,079,536 | 91,079,536 |
| 2008 | $258,346,712 | 66,823,436 | 66,823,436 |
| 2009 | $89,368,772 | 30,154,546 | 30,154,546 |
| 2010 | $219,206,665 | 72,276,621 | 72,276,621 |
| 2011 | $216,940,964 | 58,368,730 | 58,368,730 |
Note: Quantity represents Weight in kilograms
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