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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $25,586,770 | 91,479,335 | 91,479,335 |
| 2006 | $39,631,988 | 7,219,201,684 | 7,219,201,684 |
| 2007 | $61,221,681 | 3,530,212,164 | 3,530,212,164 |
| 2008 | $218,677,072 | 11,559,906,784 | 11,559,906,784 |
| 2009 | $738,865,948 | 46,662,116,800 | 46,662,116,800 |
| 2010 | $183,781,946 | 11,962,234,728 | 11,962,234,728 |
| 2011 | $134,400,234 | 12,240,037,826 | 12,240,037,826 |
Note: Quantity represents Weight in kilograms
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