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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $255,490,018 | 1,387,934,560 | 1,387,934,560 |
| 2006 | $194,561,192 | 1,318,321,284 | 1,318,321,284 |
| 2007 | $292,856,000 | 1,053,167,892 | 1,053,167,892 |
| 2008 | $237,595,912 | 1,917,121,696 | 1,917,121,696 |
| 2009 | $144,799,689 | 620,009,736 | 620,009,736 |
| 2010 | $116,674,315 | 341,740,869 | 341,740,869 |
| 2011 | $75,773,608 | 137,307,020 | 137,307,020 |
Note: Quantity represents Weight in kilograms
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