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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,389,278,520 | 113,167,431 | 113,167,431 |
| 2006 | $1,699,407,765 | 148,984,824 | 148,984,824 |
| 2007 | $2,037,384,619 | 142,849,596 | 142,849,596 |
| 2008 | $2,605,581,659 | 176,577,656 | 176,577,656 |
| 2009 | $2,925,782,990 | 347,990,527 | 347,990,527 |
| 2010 | $3,956,864,808 | 0 | 0 |
| 2011 | $5,282,904,457 | 300,426,097 | 300,426,097 |
Note: Quantity represents Weight in kilograms
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