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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $5,348,243,000 | 12,808,749 | 12,808,749 |
| 2006 | $5,386,901,000 | 13,362,790 | 13,362,790 |
| 2007 | $5,301,465,000 | 11,878,303 | 11,878,303 |
| 2008 | $6,704,568,000 | 13,734,028 | 13,734,028 |
| 2009 | $7,365,097,000 | 13,754,518 | 13,754,518 |
| 2010 | $6,431,916,877 | 13,583,777 | 13,583,777 |
| 2011 | $8,329,480,093 | 15,786,751 | 15,786,751 |
Note: Quantity represents Weight in kilograms
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