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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $508,125,092 | 1,761,184,997 | 1,761,184,997 |
| 2006 | $525,457,557 | 1,697,410,846 | 1,697,410,846 |
| 2007 | $569,623,711 | 1,749,243,386 | 1,749,243,386 |
| 2008 | $654,354,197 | 1,798,283,236 | 1,798,283,236 |
| 2009 | $837,042,476 | 2,101,836,916 | 2,101,836,916 |
| 2010 | $748,099,651 | 1,802,581,155 | 1,802,581,155 |
| 2011 | $815,317,913 | 1,915,254,825 | 1,915,254,825 |
Note: Quantity represents Weight in kilograms
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