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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $353,091,047 | 5,060,208 | 5,060,208 |
| 2006 | $445,286,286 | 7,840,983 | 7,840,983 |
| 2007 | $458,850,880 | 6,855,240 | 6,855,240 |
| 2008 | $462,185,874 | 5,850,576 | 5,850,576 |
| 2009 | $405,205,319 | 4,511,708 | 4,511,708 |
| 2010 | $475,705,215 | 5,887,968 | 5,887,968 |
| 2011 | $510,465,180 | 4,755,014 | 4,755,014 |
Note: Quantity represents Weight in kilograms
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