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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $825,140,000 | 334,635,700 | 334,635,700 |
| 2006 | $889,772,000 | 354,588,800 | 354,588,800 |
| 2007 | $960,036,000 | 336,154,800 | 336,154,800 |
| 2008 | $1,042,256,000 | 318,728,100 | 318,728,100 |
| 2009 | $975,561,000 | 306,098,828 | 306,098,828 |
| 2010 | $1,039,037,785 | 359,768,600 | 359,768,600 |
| 2011 | $1,234,077,844 | 403,673,804 | 403,673,804 |
Note: Quantity represents Weight in kilograms
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