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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,124,050,869 | 20,688,053 | 20,688,053 |
| 2006 | $2,390,134,766 | 43,990,210 | 43,990,210 |
| 2007 | $1,837,740,521 | 27,641,211 | 27,641,211 |
| 2008 | $3,379,535,783 | 42,906,625 | 42,906,625 |
| 2009 | $1,824,023,231 | 24,140,328 | 24,140,328 |
| 2010 | $2,527,294,652 | 122,769,042 | 122,769,042 |
| 2011 | $2,468,128,547 | 114,594,633 | 114,594,633 |
Note: Quantity represents Weight in kilograms
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