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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $746,753,833 | 330,568,319 | 330,568,319 |
| 2006 | $810,645,989 | 306,457,268 | 306,457,268 |
| 2007 | $756,454,465 | 254,021,729 | 254,021,729 |
| 2008 | $607,901,473 | 202,633,824 | 202,633,824 |
| 2009 | $388,889,769 | 109,472,794 | 109,472,794 |
| 2010 | $412,406,790 | 131,073,948 | 131,073,948 |
| 2011 | $384,225,840 | 134,427,401 | 134,427,401 |
Note: Quantity represents Weight in kilograms
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