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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,499 | 1,057 | 1,057 |
| 2006 | $4,176 | 3,711 | 3,711 |
| 2007 | $1,131 | 502 | 502 |
| 2008 | $1,822 | 3,186 | 3,186 |
| 2009 | $43,552 | 153,217 | 153,217 |
| 2010 | $7,715 | 32,856 | 32,856 |
| 2011 | $787 | 1,402 | 1,402 |
Note: Quantity represents Weight in kilograms
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