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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $431,168,160 | 297,980,264 | 297,980,264 |
| 2006 | $709,128,853 | 377,176,951 | 377,176,951 |
| 2007 | $926,294,987 | 467,491,445 | 467,491,445 |
| 2008 | $1,020,541,336 | 503,153,893 | 503,153,893 |
| 2009 | $567,862,742 | 443,897,667 | 443,897,667 |
| 2010 | $937,020,907 | 545,691,776 | 545,691,776 |
| 2011 | $1,098,176,318 | 566,952,532 | 566,952,532 |
Note: Quantity represents Weight in kilograms
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