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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,326,921,326 | 238,536,137,680 | 238,536,137,680 |
| 2006 | $10,854,873,069 | 247,612,945,410 | 247,612,945,410 |
| 2007 | $13,217,220,746 | 266,028,792,552 | 266,028,792,552 |
| 2008 | $25,303,921,289 | 308,392,796,332 | 308,392,796,332 |
| 2009 | $23,435,213,728 | 361,239,312,866 | 361,239,312,866 |
| 2010 | $44,004,903,088 | 400,431,990,712 | 400,431,990,712 |
| 2011 | $60,974,021,539 | 418,585,790,573 | 418,585,790,573 |
Note: Quantity represents Weight in kilograms
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