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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $388,545,587 | 11,188,892,425 | 11,188,892,425 |
| 2006 | $699,065,668 | 19,029,967,883 | 19,029,967,883 |
| 2007 | $557,725,569 | 14,254,291,918 | 14,254,291,918 |
| 2008 | $578,333,443 | 12,378,401,135 | 12,378,401,135 |
| 2009 | $396,453,032 | 8,304,830,813 | 8,304,830,813 |
| 2010 | $459,084,265 | 9,644,966,982 | 9,644,966,982 |
| 2011 | $493,537,351 | 8,661,919,777 | 8,661,919,777 |
Note: Quantity represents Weight in kilograms
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