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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $233,159,563 | 522,312,270 | 522,312,270 |
| 2006 | $503,133,429 | 483,948,631 | 483,948,631 |
| 2007 | $468,128,599 | 412,703,082 | 412,703,082 |
| 2008 | $228,526,608 | 404,307,460 | 404,307,460 |
| 2009 | $295,579,346 | 594,268,200 | 594,268,200 |
| 2010 | $391,572,195 | 588,143,088 | 588,143,088 |
| 2011 | $478,175,167 | 660,258,948 | 660,258,948 |
Note: Quantity represents Weight in kilograms
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