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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $557,958,719 | 172,251,280 | 172,251,280 |
| 2006 | $598,538,294 | 181,627,419 | 181,627,419 |
| 2007 | $575,262,079 | 164,321,931 | 164,321,931 |
| 2008 | $555,090,074 | 96,018,131 | 96,018,131 |
| 2009 | $388,403,630 | 110,957,089 | 110,957,089 |
| 2010 | $491,996,047 | 132,771,661 | 132,771,661 |
| 2011 | $556,940,657 | 151,927,008 | 151,927,008 |
Note: Quantity represents Weight in kilograms
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