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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $274,697,000 | 265,126,065 | 265,126,065 |
| 2006 | $340,184,000 | 294,343,200 | 294,343,200 |
| 2007 | $424,757,000 | 299,896,500 | 299,896,500 |
| 2008 | $502,922,000 | 304,287,105 | 304,287,105 |
| 2009 | $248,730,000 | 180,834,400 | 180,834,400 |
| 2010 | $316,506,536 | 254,841,767 | 254,841,767 |
| 2011 | $510,832,998 | 325,547,103 | 325,547,103 |
Note: Quantity represents Weight in kilograms
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