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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $436,716,908 | 544,998,955 | 544,998,955 |
| 2006 | $535,059,980 | 657,201,707 | 657,201,707 |
| 2007 | $397,924,547 | 423,817,140 | 423,817,140 |
| 2008 | $652,567,497 | 608,594,765 | 608,594,765 |
| 2009 | $245,429,348 | 218,134,224 | 218,134,224 |
| 2010 | $431,423,767 | 448,656,433 | 448,656,433 |
Note: Quantity represents Weight in kilograms
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