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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $485,604,937 | 38,524,387 | 38,524,387 |
| 2006 | $579,201,479 | 31,610,127 | 31,610,127 |
| 2007 | $918,027,440 | 24,146,885 | 24,146,885 |
| 2008 | $597,793,812 | 26,235,474 | 26,235,474 |
| 2009 | $221,833,673 | 15,834,466 | 15,834,466 |
| 2010 | $399,968,088 | 18,647,462 | 18,647,462 |
| 2011 | $667,812,169 | 28,993,912 | 28,993,912 |
Note: Quantity represents Weight in kilograms
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