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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $762,852,074 | 680,125,076 | 680,125,076 |
| 2006 | $793,772,854 | 637,929,183 | 637,929,183 |
| 2007 | $839,942,962 | 610,466,193 | 610,466,193 |
| 2008 | $979,105,516 | 625,116,869 | 625,116,869 |
| 2009 | $977,892,923 | 839,048,370 | 839,048,370 |
| 2010 | $1,158,227,523 | 818,702,190 | 818,702,190 |
| 2011 | $1,290,320,458 | 818,423,363 | 818,423,363 |
Note: Quantity represents Weight in kilograms
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