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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,820,562,054 | 331,670,105 | 331,670,105 |
| 2006 | $2,575,993,139 | 304,067,476 | 304,067,476 |
| 2007 | $3,165,971,541 | 379,491,786 | 379,491,786 |
| 2008 | $2,996,597,487 | 360,630,545 | 360,630,545 |
| 2009 | $2,817,325,710 | 255,329,025 | 255,329,025 |
| 2010 | $2,962,246,318 | 275,165,485 | 275,165,485 |
| 2011 | $3,477,249,155 | 338,111,629 | 338,111,629 |
Note: Quantity represents Weight in kilograms
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