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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $16,672,423,242 | 17,733,000 | 226 |
| 2006 | $19,269,597,802 | 65,667,255 | 269 |
| 2007 | $20,730,116,293 | 0 | 322 |
| 2008 | $25,061,254,291 | 30,407,185 | 375 |
| 2009 | $23,957,010,935 | 27,031,426 | 331 |
| 2010 | $35,831,627,110 | 35,702,766 | 699 |
| 2011 | $38,751,579,625 | 44,085,231 | 526 |
Note: Quantity represents Number of items
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