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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $343,148,987 | 22,070,734 | 22,070,734 |
| 2006 | $669,900,804 | 43,086,832 | 43,086,832 |
| 2007 | $1,057,301,454 | 68,487,858 | 68,487,858 |
| 2008 | $1,301,986,038 | 73,041,998 | 73,041,998 |
| 2009 | $595,090,041 | 28,143,237 | 28,143,237 |
| 2010 | $719,426,256 | 36,925,369 | 36,925,369 |
| 2011 | $1,082,201,562 | 63,433,901 | 63,433,901 |
Note: Quantity represents Weight in kilograms
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