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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,850,143,163 | 1,185,467,121 | 1,185,467,121 |
| 2006 | $1,943,104,197 | 1,165,861,318 | 1,165,861,318 |
| 2007 | $2,061,460,027 | 1,146,568,591 | 1,146,568,591 |
| 2008 | $1,881,766,765 | 934,670,867 | 934,670,867 |
| 2009 | $1,403,105,000 | 915,460,102 | 915,460,102 |
| 2010 | $1,868,482,811 | 954,227,164 | 954,227,164 |
| 2011 | $1,783,999,511 | 750,911,396 | 750,911,396 |
Note: Quantity represents Weight in kilograms
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