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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $425,434,000 | 1,134,798,300 | 1,134,798,300 |
| 2006 | $496,343,000 | 1,323,190,900 | 1,323,190,900 |
| 2007 | $574,209,000 | 1,207,219,200 | 1,207,219,200 |
| 2008 | $864,860,000 | 1,605,943,200 | 1,605,943,200 |
| 2009 | $630,594,000 | 1,640,915,900 | 1,640,915,900 |
| 2010 | $670,914,682 | 1,555,442,900 | 1,555,442,900 |
| 2011 | $860,176,141 | 1,701,585,756 | 1,701,585,756 |
Note: Quantity represents Weight in kilograms
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