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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $999,038,546 | 8,898,195 | 8,898,195 |
| 2006 | $893,102,241 | 10,057,720 | 10,057,720 |
| 2007 | $663,257,818 | 4,851,146 | 4,851,146 |
| 2008 | $541,881,587 | 4,466,886 | 4,466,886 |
| 2009 | $404,838,818 | 3,438,946 | 3,438,946 |
| 2010 | $462,455,247 | 3,794,937 | 3,794,937 |
| 2011 | $431,336,390 | 2,845,212 | 2,845,212 |
Note: Quantity represents Weight in kilograms
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