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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $358,489,000 | 2,172,743,000 | 2,172,743,000 |
| 2006 | $405,241,000 | 2,109,372,800 | 2,109,372,800 |
| 2007 | $400,488,000 | 1,868,360,100 | 1,868,360,100 |
| 2008 | $844,867,000 | 2,293,511,500 | 2,293,511,500 |
| 2009 | $402,161,000 | 1,993,634,700 | 1,993,634,700 |
| 2010 | $493,755,654 | 2,253,789,100 | 2,253,789,100 |
| 2011 | $856,108,403 | 2,599,122,520 | 2,599,122,520 |
Note: Quantity represents Weight in kilograms
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