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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $452,462,439 | 37,933,706 | 37,933,706 |
| 2006 | $494,816,252 | 41,797,792 | 41,797,792 |
| 2007 | $576,732,697 | 43,329,721 | 43,329,721 |
| 2008 | $615,147,360 | 43,302,968 | 43,302,968 |
| 2009 | $601,506,165 | 44,675,778 | 44,675,778 |
| 2010 | $635,595,528 | 48,750,253 | 48,750,253 |
| 2011 | $719,634,926 | 52,179,097 | 52,179,097 |
Note: Quantity represents Weight in kilograms
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