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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,997,248 | 2,179,280,684 | 2,179,280,684 |
| 2006 | $15,852,932 | 2,304,567,197 | 2,304,567,197 |
| 2007 | $14,611,624 | 2,542,088,896 | 2,542,088,896 |
| 2008 | $15,660,021 | 2,340,956,650 | 2,340,956,650 |
| 2009 | $13,330,263 | 2,141,901,972 | 2,141,901,972 |
| 2010 | $16,903,695 | 28,308,714,850 | 28,308,714,850 |
| 2011 | $14,690,777 | 34,451,471,258 | 34,451,471,258 |
Note: Quantity represents Weight in kilograms
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