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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $116,737,657 | 2,660,066,016 | 2,660,066,016 |
| 2006 | $106,867,276 | 2,427,171,944 | 2,427,171,944 |
| 2007 | $126,049,121 | 2,603,027,984 | 2,603,027,984 |
| 2008 | $517,476,387 | 5,163,180,920 | 5,163,180,920 |
| 2009 | $155,545,744 | 1,248,190,008 | 1,248,190,008 |
| 2010 | $147,046,274 | 2,091,920,968 | 2,091,920,968 |
| 2011 | $246,502,861 | 2,645,718,968 | 2,645,718,968 |
Note: Quantity represents Weight in kilograms
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