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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $747,128,505 | 154,686,258 | 154,686,258 |
| 2006 | $856,671,411 | 188,830,821 | 188,830,821 |
| 2007 | $1,050,356,179 | 203,378,602 | 203,378,602 |
| 2008 | $1,122,909,638 | 286,646,027 | 286,646,027 |
| 2009 | $1,018,788,137 | 208,246,665 | 208,246,665 |
| 2010 | $1,198,379,773 | 257,448,638 | 257,448,638 |
| 2011 | $1,598,926,778 | 337,650,550 | 337,650,550 |
Note: Quantity represents Weight in kilograms
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