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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $429,440,542 | 2,179,211,448 | 2,179,211,448 |
| 2006 | $406,090,211 | 2,131,099,171 | 2,131,099,171 |
| 2007 | $266,824,603 | 913,199,152 | 913,199,152 |
| 2008 | $484,290,511 | 1,076,263,875 | 1,076,263,875 |
| 2009 | $434,608,700 | 1,738,485,624 | 1,738,485,624 |
| 2010 | $536,133,441 | 2,367,155,823 | 2,367,155,823 |
| 2011 | $612,410,909 | 1,775,519,955 | 1,775,519,955 |
Note: Quantity represents Weight in kilograms
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