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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $456,245,412 | 709,068,628 | 709,068,628 |
| 2006 | $514,587,643 | 518,267,249 | 518,267,249 |
| 2007 | $536,408,985 | 487,880,354 | 487,880,354 |
| 2008 | $498,816,912 | 487,036,824 | 487,036,824 |
| 2009 | $613,067,614 | 611,713,842 | 611,713,842 |
| 2010 | $533,594,434 | 318,582,235 | 318,582,235 |
| 2011 | $478,079,317 | 333,231,038 | 333,231,038 |
Note: Quantity represents Weight in kilograms
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