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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $673,047,613 | 100,513,798 | 100,513,798 |
| 2006 | $923,194,185 | 115,538,384 | 115,538,384 |
| 2007 | $2,125,399,231 | 276,426,270 | 276,426,270 |
| 2008 | $2,052,894,737 | 266,802,221 | 266,802,221 |
| 2009 | $1,565,688,888 | 207,562,397 | 207,562,397 |
| 2010 | $2,157,594,928 | 268,117,637 | 268,117,637 |
| 2011 | $2,420,560,849 | 284,796,977 | 284,796,977 |
Note: Quantity represents Weight in kilograms
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