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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $408,707,168 | 79,739,479 | 79,739,479 |
| 2006 | $426,289,997 | 79,317,316 | 79,317,316 |
| 2007 | $427,319,222 | 76,418,652 | 76,418,652 |
| 2008 | $387,034,248 | 68,774,641 | 68,774,641 |
| 2009 | $301,500,181 | 51,326,544 | 51,326,544 |
| 2010 | $347,537,971 | 59,972,930 | 59,972,930 |
| 2011 | $347,322,357 | 55,574,399 | 55,574,399 |
Note: Quantity represents Weight in kilograms
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