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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $108,047,915 | 439,623,992 | 439,623,992 |
| 2006 | $145,491,984 | 598,232,000 | 598,232,000 |
| 2007 | $310,678,281 | 1,153,065,008 | 1,153,065,008 |
| 2008 | $265,342,674 | 825,864,016 | 825,864,016 |
| 2009 | $330,729,150 | 1,140,557,693 | 1,140,557,693 |
| 2010 | $255,303,481 | 737,013,000 | 737,013,000 |
| 2011 | $195,812,052 | 456,649,000 | 456,649,000 |
Note: Quantity represents Weight in kilograms
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