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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $197,861,585 | 5,187,503 | 5,187,503 |
| 2006 | $691,157,080 | 5,002,511 | 5,002,511 |
| 2007 | $956,487,141 | 4,059,629 | 4,059,629 |
| 2008 | $1,464,390,987 | 3,699,074 | 3,699,074 |
| 2009 | $1,492,301,848 | 3,364,101 | 3,364,101 |
| 2010 | $2,138,864,140 | 2,622,734 | 2,622,734 |
| 2011 | $2,698,303,925 | 2,208,018 | 2,208,018 |
Note: Quantity represents Weight in kilograms
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