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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,323,689,307 | 4,291,657 | 4,291,657 |
| 2006 | $2,546,757,115 | 5,507,078 | 5,507,078 |
| 2007 | $2,533,412,984 | 4,935,311 | 4,935,311 |
| 2008 | $2,739,783,982 | 4,964,205 | 4,964,205 |
| 2009 | $2,528,241,368 | 4,778,941 | 4,778,941 |
| 2010 | $3,420,270,700 | 5,910,915 | 5,910,915 |
| 2011 | $4,011,343,257 | 6,108,597 | 6,108,597 |
Note: Quantity represents Weight in kilograms
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