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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $202,635,708 | 220,170,241 | 220,170,241 |
| 2006 | $214,988,286 | 216,583,875 | 216,583,875 |
| 2007 | $201,544,307 | 209,305,519 | 209,305,519 |
| 2008 | $453,826,740 | 463,597,183 | 463,597,183 |
| 2009 | $134,525,187 | 114,739,026 | 114,739,026 |
| 2010 | $265,070,729 | 233,202,352 | 233,202,352 |
| 2011 | $310,206,338 | 243,132,489 | 243,132,489 |
Note: Quantity represents Weight in kilograms
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