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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $852,905,305 | 1,755,457 | 1,755,457 |
| 2006 | $908,958,662 | 1,762,753 | 1,762,753 |
| 2007 | $1,132,871,977 | 1,642,943 | 1,642,943 |
| 2008 | $1,678,053,687 | 3,447,990 | 3,447,990 |
| 2009 | $2,240,608,920 | 3,575,273 | 3,575,273 |
| 2010 | $2,919,379,971 | 3,710,207 | 3,710,207 |
| 2011 | $3,445,759,464 | 3,803,624 | 3,803,624 |
Note: Quantity represents Weight in kilograms
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