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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $5,110,505 | 297,030,540 | 297,030,540 |
| 2006 | $7,210,694 | 205,249,430 | 205,249,430 |
| 2007 | $23,403,408 | 523,994,984 | 523,994,984 |
| 2008 | $21,432,989 | 367,418,808 | 367,418,808 |
| 2009 | $21,434,904 | 824,049,111 | 824,049,111 |
| 2010 | $88,548,228 | 2,780,615,725 | 2,780,615,725 |
| 2011 | $217,607,729 | 5,599,894,076 | 5,599,894,076 |
Note: Quantity represents Weight in kilograms
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