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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,334,442 | 295,117,080 | 295,117,080 |
| 2006 | $2,259,547 | 9,736,218,250 | 9,736,218,250 |
| 2007 | $34,583,902 | 4,606,555,768 | 4,606,555,768 |
| 2008 | $35,065,748 | 4,471,784,669 | 4,471,784,669 |
| 2009 | $43,149,775 | 4,177,738,028 | 4,177,738,028 |
| 2010 | $68,326,714 | 5,721,896,256 | 5,721,896,256 |
| 2011 | $115,743,461 | 8,894,482,561 | 8,894,482,561 |
Note: Quantity represents Weight in kilograms
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