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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,835,435 | 16,376,764 | 16,376,764 |
| 2006 | $1,615,300 | 14,021,973 | 14,021,973 |
| 2007 | $36,911,553 | 1,050,445,199 | 1,050,445,199 |
| 2008 | $18,153,980 | 664,706,731 | 664,706,731 |
| 2010 | $14,539,863 | 358,027,963 | 358,027,963 |
Note: Quantity represents Weight in kilograms
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