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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $306,517,374 | 1,380,243 | 1,380,243 |
| 2006 | $271,224,241 | 1,747,049 | 1,747,049 |
| 2007 | $296,614,352 | 1,437,810 | 1,437,810 |
| 2008 | $323,349,866 | 1,589,091 | 1,589,091 |
| 2009 | $339,607,898 | 1,436,101 | 1,436,101 |
| 2010 | $364,186,344 | 1,537,943 | 1,537,943 |
| 2011 | $496,110,935 | 2,283,467 | 2,283,467 |
Note: Quantity represents Weight in kilograms
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