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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $835,549,413 | 389,366,004 | 389,366,004 |
| 2006 | $772,329,710 | 349,432,077 | 349,432,077 |
| 2007 | $972,021,529 | 427,046,085 | 427,046,085 |
| 2008 | $1,152,327,164 | 369,617,949 | 369,617,949 |
| 2009 | $982,741,804 | 436,411,058 | 436,411,058 |
| 2010 | $1,099,508,272 | 393,929,024 | 393,929,024 |
| 2011 | $1,161,125,263 | 377,041,010 | 377,041,010 |
Note: Quantity represents Weight in kilograms
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