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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $852,933,888 | 279,567,331 | 279,567,331 |
| 2006 | $961,878,012 | 300,483,503 | 300,483,503 |
| 2007 | $1,155,995,209 | 329,462,581 | 329,462,581 |
| 2008 | $1,732,549,548 | 400,072,612 | 400,072,612 |
| 2009 | $1,580,984,492 | 388,945,466 | 388,945,466 |
| 2010 | $1,760,006,643 | 427,610,425 | 427,610,425 |
| 2011 | $2,051,069,473 | 441,342,675 | 441,342,675 |
Note: Quantity represents Weight in kilograms
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