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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $266,903,030 | 1,205,791,994 | 1,205,791,994 |
| 2006 | $240,667,711 | 962,496,442 | 962,496,442 |
| 2007 | $264,888,306 | 866,742,544 | 866,742,544 |
| 2008 | $500,452,728 | 1,028,037,493 | 1,028,037,493 |
| 2009 | $172,514,664 | 674,743,080 | 674,743,080 |
| 2010 | $329,461,898 | 952,499,314 | 952,499,314 |
| 2011 | $499,334,095 | 1,188,210,494 | 1,188,210,494 |
Note: Quantity represents Weight in kilograms
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