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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,089,998,722 | 19,342,624 | 19,342,624 |
| 2006 | $1,099,788,985 | 21,950,163 | 21,950,163 |
| 2007 | $1,046,878,734 | 20,530,411 | 20,530,411 |
| 2008 | $1,159,786,587 | 20,521,713 | 20,521,713 |
| 2009 | $853,465,004 | 14,623,163 | 14,623,163 |
| 2010 | $909,074,525 | 14,009,118 | 14,009,118 |
| 2011 | $1,150,141,010 | 17,754,107 | 17,754,107 |
Note: Quantity represents Weight in kilograms
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