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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $271,843,888 | 1,235,027,375 | 1,235,027,375 |
| 2006 | $313,019,957 | 1,006,916,883 | 1,006,916,883 |
| 2007 | $390,870,497 | 1,002,618,308 | 1,002,618,308 |
| 2008 | $433,442,719 | 970,799,056 | 970,799,056 |
| 2009 | $401,852,284 | 951,557,260 | 951,557,260 |
| 2010 | $600,008,237 | 1,096,963,781 | 1,096,963,781 |
| 2011 | $588,858,072 | 975,455,658 | 975,455,658 |
Note: Quantity represents Weight in kilograms
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