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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $299,338,839 | 26,946,490 | 4,916,223,991 |
| 2006 | $327,822,402 | 28,788,431 | 5,384,026,895 |
| 2007 | $431,034,838 | 30,516,432 | 0 |
| 2008 | $454,368,137 | 28,477,781 | 0 |
| 2009 | $405,622,654 | 24,419,193 | 9,985,675,640 |
| 2010 | $534,788,206 | 25,087,706 | 0 |
| 2011 | $649,395,954 | 26,586,572 | 0 |
Note: Quantity represents Number of items
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