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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,460,601 | 48,971,280 | 48,971,280 |
| 2006 | $2,229,582,187 | 9,804,591,773 | 9,804,591,773 |
| 2007 | $14,909,719 | 185,021,000 | 185,021,000 |
| 2008 | $15,694,042 | 371,212,864 | 371,212,864 |
| 2009 | $14,892,059 | 117,532,223 | 117,532,223 |
| 2010 | $36,206,786 | 192,955,428 | 192,955,428 |
Note: Quantity represents Weight in kilograms
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