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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $706,693,380 | 722,931,178 | 0 |
| 2006 | $860,649,826 | 515,728,043 | 0 |
| 2007 | $853,440,398 | 701,120,688 | 0 |
| 2008 | $727,523,942 | 482,556,450 | 0 |
| 2009 | $1,016,279,444 | 808,333,908 | 66 |
| 2010 | $694,800,101 | 663,372,220 | 0 |
| 2011 | $1,424,085,731 | 968,357,510 | 39 |
Note: Quantity represents No Quantity
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