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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $447,034,006 | 13,148,059 | 13,148,059 |
| 2006 | $465,798,825 | 9,898,708 | 9,898,708 |
| 2007 | $439,656,422 | 9,361,208 | 9,361,208 |
| 2008 | $389,533,103 | 7,760,942 | 7,760,942 |
| 2009 | $278,302,036 | 4,979,210 | 4,979,210 |
| 2010 | $445,370,803 | 8,250,180 | 8,250,180 |
| 2011 | $484,004,444 | 8,539,830 | 8,539,830 |
Note: Quantity represents Weight in kilograms
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