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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $806,259,540 | 10,153,124 | 10,153,124 |
| 2006 | $1,121,520,903 | 7,470,112 | 7,470,112 |
| 2007 | $926,064,648 | 4,900,728 | 4,900,728 |
| 2008 | $867,568,514 | 4,041,546 | 4,041,546 |
| 2009 | $641,777,703 | 2,817,725 | 2,817,725 |
| 2010 | $829,682,542 | 4,255,387 | 4,255,387 |
| 2011 | $914,368,637 | 0 | 0 |
Note: Quantity represents Weight in kilograms
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