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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $468,495,699 | 1,527,537,330 | 1,527,537,330 |
| 2006 | $632,420,205 | 1,703,047,256 | 1,703,047,256 |
| 2007 | $812,416,819 | 1,559,460,148 | 1,559,460,148 |
| 2008 | $742,903,398 | 1,280,867,928 | 1,280,867,928 |
| 2009 | $1,180,973,580 | 4,421,632,578 | 4,421,632,578 |
| 2010 | $1,965,373,270 | 5,437,745,456 | 5,437,745,456 |
| 2011 | $2,778,546,266 | 6,148,991,530 | 6,148,991,530 |
Note: Quantity represents Weight in kilograms
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