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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $449,249,506 | 15,957,568 | 15,957,568 |
| 2006 | $520,119,051 | 19,057,666 | 19,057,666 |
| 2007 | $609,603,489 | 19,420,913 | 19,420,913 |
| 2008 | $698,076,377 | 21,056,775 | 21,056,775 |
| 2009 | $618,230,310 | 20,275,322 | 20,275,322 |
| 2010 | $597,172,406 | 21,573,946 | 21,573,946 |
| 2011 | $630,941,521 | 22,254,331 | 22,254,331 |
Note: Quantity represents Weight in kilograms
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