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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $491,194,788 | 199,395,528 | 199,395,528 |
| 2006 | $1,017,099,380 | 273,303,730 | 273,303,730 |
| 2007 | $1,071,346,302 | 304,843,089 | 304,843,089 |
| 2008 | $1,008,481,202 | 448,502,500 | 448,502,500 |
| 2009 | $2,195,310,474 | 464,680,190 | 464,680,190 |
| 2010 | $842,346,895 | 321,311,929 | 321,311,929 |
| 2011 | $2,397,078,688 | 547,541,932 | 547,541,932 |
Note: Quantity represents Weight in kilograms
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