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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $467,022,696 | 575,362,329 | 575,362,329 |
| 2006 | $416,399,977 | 649,929,354 | 649,929,354 |
| 2007 | $481,193,468 | 687,701,040 | 687,701,040 |
| 2008 | $567,265,717 | 712,480,918 | 712,480,918 |
| 2009 | $560,679,381 | 689,910,674 | 689,910,674 |
| 2010 | $497,390,831 | 663,049,720 | 663,049,720 |
| 2011 | $550,939,321 | 668,061,079 | 668,061,079 |
Note: Quantity represents Weight in kilograms
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