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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $516,411,515 | 39,941,601 | 39,941,601 |
| 2006 | $578,821,021 | 42,110,774 | 42,110,774 |
| 2007 | $527,721,288 | 36,631,499 | 36,631,499 |
| 2008 | $432,963,318 | 23,878,143 | 23,878,143 |
| 2009 | $492,383,178 | 20,748,399 | 20,748,399 |
| 2010 | $457,580,155 | 16,590,236 | 16,590,236 |
| 2011 | $586,379,511 | 19,089,420 | 19,089,420 |
Note: Quantity represents Weight in kilograms
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