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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $14,276,209 | 2,296,424,020 | 2,296,424,020 |
| 2006 | $14,851,365 | 2,243,697,052 | 2,243,697,052 |
| 2007 | $14,271,231 | 1,955,856,947 | 1,955,856,947 |
| 2008 | $16,630,906 | 1,918,856,312 | 1,918,856,312 |
| 2009 | $7,960,390 | 906,275,153 | 906,275,153 |
| 2010 | $10,335,326 | 1,468,140,330 | 1,468,140,330 |
| 2011 | $13,000,020 | 1,750,163,863 | 1,750,163,863 |
Note: Quantity represents Weight in kilograms
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