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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,519,772 | 10,204,300 | 10,204,300 |
| 2006 | $248,850 | 7,900,000 | 7,900,000 |
| 2007 | $20 | 2 | 2 |
| 2009 | $1,268,088,785 | 3,436,944,335 | 3,436,944,335 |
| 2010 | $2,887,142,044 | 6,066,127,499 | 6,066,127,499 |
| 2011 | $4,613,845,448 | 6,658,220,629 | 6,658,220,629 |
Note: Quantity represents Weight in kilograms
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