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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,260,812,679 | 33,570,069 | 33,570,069 |
| 2006 | $1,401,353,634 | 36,628,671 | 36,628,671 |
| 2007 | $1,538,888,718 | 37,701,525 | 37,701,525 |
| 2008 | $1,474,079,878 | 35,688,563 | 35,688,563 |
| 2009 | $1,094,068,445 | 25,807,778 | 25,807,778 |
| 2010 | $1,618,851,182 | 35,302,988 | 35,302,988 |
| 2011 | $1,598,342,015 | 30,223,271 | 30,223,271 |
Note: Quantity represents Weight in kilograms
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