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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $128,729,000 | 33,999,800 | 33,999,800 |
| 2006 | $162,833,000 | 38,486,600 | 38,486,600 |
| 2007 | $167,229,000 | 37,429,300 | 37,429,300 |
| 2008 | $252,548,000 | 42,452,300 | 42,452,300 |
| 2009 | $221,221,000 | 42,987,900 | 42,987,900 |
| 2010 | $210,545,514 | 44,119,200 | 44,119,200 |
| 2011 | $322,681,583 | 54,997,286 | 54,997,286 |
Note: Quantity represents Weight in kilograms
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