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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,291,896,513 | 106,799,383 | 129,445,416 |
| 2006 | $5,899,947,784 | 100,146,399 | 120,951,626 |
| 2007 | $2,825,118,445 | 0 | 100,885,132 |
| 2008 | $1,387,772,496 | 0 | 65,725,676 |
| 2009 | $939,096,229 | 0 | 43,337,904 |
| 2010 | $965,947,753 | 0 | 39,003,447 |
| 2011 | $852,472,199 | 0 | 35,098,470 |
Note: Quantity represents Number of items
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