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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $712,107,006 | 785,216,693 | 785,216,693 |
| 2006 | $834,371,835 | 961,430,923 | 961,430,923 |
| 2007 | $768,954,503 | 847,760,309 | 847,760,309 |
| 2008 | $742,224,322 | 663,255,796 | 663,255,796 |
| 2009 | $294,367,906 | 304,741,713 | 304,741,713 |
| 2010 | $383,827,676 | 350,753,850 | 350,753,850 |
| 2011 | $515,280,411 | 414,618,080 | 414,618,080 |
Note: Quantity represents Weight in kilograms
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