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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,457,022,000 | 131,926,200 | 131,926,200 |
| 2006 | $4,134,961,000 | 157,876,722 | 157,876,722 |
| 2007 | $4,890,198,000 | 162,372,286 | 162,372,286 |
| 2008 | $5,712,302,000 | 167,512,801 | 167,512,801 |
| 2009 | $4,890,652,000 | 148,056,123 | 148,056,123 |
| 2010 | $5,186,653,007 | 158,870,471 | 158,870,471 |
| 2011 | $6,013,268,348 | 164,418,287 | 164,418,287 |
Note: Quantity represents Weight in kilograms
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