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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,177,937,822 | 135,853,479 | 135,853,479 |
| 2006 | $1,403,749,628 | 73,165,001 | 73,165,001 |
| 2007 | $1,510,327,381 | 52,452,037 | 52,452,037 |
| 2008 | $1,635,232,234 | 59,943,347 | 59,943,347 |
| 2009 | $1,368,257,267 | 40,957,871 | 40,957,871 |
| 2010 | $1,543,049,943 | 44,192,282 | 44,192,282 |
| 2011 | $1,855,380,736 | 52,225,834 | 52,225,834 |
Note: Quantity represents Weight in kilograms
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