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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $405,268,794 | 2,350,771,802 | 2,350,771,802 |
| 2006 | $416,139,159 | 2,332,997,468 | 2,332,997,468 |
| 2007 | $584,952,364 | 2,188,369,945 | 2,188,369,945 |
| 2008 | $737,090,807 | 1,595,716,743 | 1,595,716,743 |
| 2009 | $725,891,877 | 2,614,966,638 | 2,614,966,638 |
| 2010 | $776,194,949 | 2,790,823,880 | 2,790,823,880 |
| 2011 | $1,097,648,604 | 2,854,579,615 | 2,854,579,615 |
Note: Quantity represents Weight in kilograms
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