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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $306,074,880 | 142,151,256 | 142,151,256 |
| 2006 | $514,917,824 | 238,063,281 | 238,063,281 |
| 2007 | $426,884,136 | 173,614,916 | 173,614,916 |
| 2008 | $643,799,922 | 224,648,296 | 224,648,296 |
| 2009 | $583,783,598 | 197,470,479 | 197,470,479 |
| 2010 | $886,639,634 | 229,427,299 | 229,427,299 |
| 2011 | $1,580,371,372 | 293,637,673 | 293,637,673 |
Note: Quantity represents Weight in kilograms
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