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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $632,378,096 | 14,032,743 | 14,032,743 |
| 2006 | $655,984,793 | 14,497,754 | 14,497,754 |
| 2007 | $684,888,707 | 20,588,568 | 20,588,568 |
| 2008 | $686,222,021 | 13,088,193 | 13,088,193 |
| 2009 | $520,208,985 | 10,835,828 | 10,835,828 |
| 2010 | $630,523,864 | 43,953,836 | 43,953,836 |
| 2011 | $736,674,973 | 14,245,671 | 14,245,671 |
Note: Quantity represents Weight in kilograms
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