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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,698,031,574 | 143,811,760 | 143,811,760 |
| 2006 | $1,723,169,292 | 147,804,448 | 147,804,448 |
| 2007 | $1,974,802,691 | 184,155,501 | 184,155,501 |
| 2008 | $2,000,711,581 | 172,718,433 | 172,718,433 |
| 2009 | $1,681,490,378 | 130,948,896 | 130,948,896 |
| 2010 | $2,144,933,888 | 171,387,961 | 171,387,961 |
| 2011 | $2,055,506,260 | 156,637,505 | 156,637,505 |
Note: Quantity represents Weight in kilograms
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