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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,912,881,311 | 984,982,928 | 984,982,928 |
| 2006 | $2,439,183,554 | 942,176,095 | 942,176,095 |
| 2007 | $2,617,644,346 | 970,120,416 | 970,120,416 |
| 2008 | $2,134,087,157 | 773,832,867 | 773,832,867 |
| 2009 | $1,566,947,383 | 894,173,396 | 894,173,396 |
| 2010 | $2,249,468,594 | 986,492,220 | 986,492,220 |
| 2011 | $2,259,823,557 | 887,709,492 | 887,709,492 |
Note: Quantity represents Weight in kilograms
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