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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $554,131,000 | 44,326,200 | 44,326,200 |
| 2006 | $676,443,000 | 50,516,071 | 50,516,071 |
| 2007 | $759,127,000 | 51,259,260 | 51,259,260 |
| 2008 | $656,568,000 | 57,011,681 | 57,011,681 |
| 2009 | $519,354,000 | 41,762,045 | 41,762,045 |
| 2010 | $719,224,000 | 68,360,398 | 68,360,398 |
| 2011 | $851,989,000 | 64,538,360 | 64,538,360 |
Note: Quantity represents Weight in kilograms
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