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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $462,386,824 | 736,890,376 | 736,890,376 |
| 2006 | $475,944,028 | 837,320,450 | 837,320,450 |
| 2007 | $732,199,184 | 874,295,760 | 874,295,760 |
| 2008 | $1,080,018,910 | 630,428,174 | 630,428,174 |
| 2009 | $428,042,772 | 560,030,147 | 560,030,147 |
| 2010 | $735,312,528 | 734,830,161 | 734,830,161 |
| 2011 | $609,299,439 | 653,651,252 | 653,651,252 |
Note: Quantity represents Weight in kilograms
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