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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,258,910,456 | 679,799,543 | 679,799,543 |
| 2006 | $1,346,740,621 | 591,789,408 | 591,789,408 |
| 2007 | $1,533,631,838 | 617,116,821 | 617,116,821 |
| 2008 | $1,975,241,702 | 714,238,518 | 714,238,518 |
| 2009 | $1,587,128,783 | 578,379,801 | 578,379,801 |
| 2010 | $2,001,647,928 | 684,172,210 | 684,172,210 |
| 2011 | $2,401,080,503 | 709,052,852 | 709,052,852 |
Note: Quantity represents Weight in kilograms
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