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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $588,007,497 | 41,364,341 | 41,364,341 |
| 2006 | $956,432,995 | 51,129,607 | 51,129,607 |
| 2007 | $1,343,633,554 | 37,893,231 | 37,893,231 |
| 2008 | $611,584,012 | 29,735,379 | 29,735,379 |
| 2009 | $164,120,501 | 12,036,336 | 12,036,336 |
| 2010 | $328,239,483 | 14,973,360 | 14,973,360 |
| 2011 | $441,053,067 | 18,933,798 | 18,933,798 |
Note: Quantity represents Weight in kilograms
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