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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $18,411,524 | 138,142,946 | 138,142,946 |
| 2006 | $5,170,955 | 30,749,302 | 30,749,302 |
| 2007 | $100,266,615 | 519,632,004 | 519,632,004 |
| 2008 | $321,129,513 | 1,134,103,268 | 1,134,103,268 |
| 2009 | $283,124,404 | 1,226,269,466 | 1,226,269,466 |
| 2010 | $249,817,565 | 1,187,095,020 | 1,187,095,020 |
| 2011 | $276,582,934 | 1,289,030,256 | 1,289,030,256 |
Note: Quantity represents Weight in kilograms
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