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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,272,600,000 | 39,234,146 | 39,234,146 |
| 2006 | $3,819,273,000 | 73,738,790 | 73,738,790 |
| 2007 | $3,769,817,000 | 94,234,224 | 94,234,224 |
| 2008 | $4,511,032,000 | 109,733,609 | 109,733,609 |
| 2009 | $2,854,899,000 | 84,341,797 | 84,341,797 |
| 2010 | $3,629,064,643 | 89,635,285 | 89,635,285 |
| 2011 | $3,180,873,827 | 67,283,935 | 67,283,935 |
Note: Quantity represents Weight in kilograms
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