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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $521,234,567 | 6,789,934 | 6,789,934 |
| 2006 | $575,763,134 | 6,052,537 | 6,052,537 |
| 2007 | $578,312,531 | 6,235,309 | 6,235,309 |
| 2008 | $545,121,122 | 5,913,537 | 5,913,537 |
| 2009 | $442,673,077 | 3,773,592 | 3,773,592 |
| 2010 | $704,750,452 | 5,271,484 | 5,271,484 |
| 2011 | $644,370,920 | 4,762,722 | 4,762,722 |
Note: Quantity represents Weight in kilograms
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