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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,484,458,469 | 21,071,093 | 21,071,093 |
| 2006 | $1,650,145,206 | 15,855,042 | 15,855,042 |
| 2007 | $2,108,657,859 | 0 | 0 |
| 2008 | $2,648,375,586 | 0 | 0 |
| 2009 | $2,383,838,374 | 0 | 0 |
| 2010 | $2,477,370,240 | 0 | 0 |
| 2011 | $3,128,829,694 | 0 | 0 |
Note: Quantity represents Weight in kilograms
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