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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $527,506,056 | 267,811,144 | 267,811,144 |
| 2006 | $554,066,629 | 210,558,794 | 210,558,794 |
| 2007 | $459,483,671 | 166,333,851 | 166,333,851 |
| 2008 | $471,328,516 | 162,135,063 | 162,135,063 |
| 2009 | $250,857,010 | 121,708,088 | 121,708,088 |
| 2010 | $568,261,910 | 256,594,184 | 256,594,184 |
| 2011 | $393,008,945 | 150,842,398 | 150,842,398 |
Note: Quantity represents Weight in kilograms
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