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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $165,773,641 | 512,437,839 | 512,437,839 |
| 2006 | $163,637,951 | 639,401,920 | 639,401,920 |
| 2007 | $116,279,709 | 336,120,737 | 336,120,737 |
| 2008 | $337,926,101 | 766,857,621 | 766,857,621 |
| 2009 | $291,545,829 | 542,022,987 | 542,022,987 |
| 2010 | $639,275,530 | 1,701,050,941 | 1,701,050,941 |
| 2011 | $853,467,003 | 2,135,633,982 | 2,135,633,982 |
Note: Quantity represents Weight in kilograms
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