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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,518,961,159 | 139,801,621 | 139,801,621 |
| 2006 | $1,886,989,125 | 208,592,653 | 208,592,653 |
| 2007 | $2,408,356,261 | 238,554,658 | 238,554,658 |
| 2008 | $2,731,252,408 | 220,573,927 | 220,573,927 |
| 2009 | $1,861,263,948 | 137,743,792 | 137,743,792 |
| 2010 | $2,256,953,768 | 183,147,074 | 183,147,074 |
| 2011 | $3,028,674,339 | 235,850,642 | 235,850,642 |
Note: Quantity represents Weight in kilograms
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