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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,952,575,335 | 73,349,937 | 73,349,937 |
| 2006 | $1,990,388,928 | 55,017,424 | 55,017,424 |
| 2007 | $2,072,408,485 | 46,523,072 | 46,523,072 |
| 2008 | $1,936,095,946 | 38,266,752 | 38,266,752 |
| 2009 | $1,410,576,171 | 25,966,184 | 25,966,184 |
| 2010 | $2,006,412,218 | 37,680,288 | 37,680,288 |
| 2011 | $2,176,992,715 | 40,913,284 | 40,913,284 |
Note: Quantity represents Weight in kilograms
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