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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $486,083,878 | 458,857,474 | 458,857,474 |
| 2006 | $561,710,888 | 387,925,353 | 387,925,353 |
| 2007 | $618,238,661 | 386,346,162 | 386,346,162 |
| 2008 | $630,881,890 | 403,025,545 | 403,025,545 |
| 2009 | $416,611,130 | 254,848,658 | 254,848,658 |
| 2010 | $468,546,736 | 357,797,789 | 357,797,789 |
| 2011 | $508,403,098 | 349,274,726 | 349,274,726 |
Note: Quantity represents Weight in kilograms
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