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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,269,421,000 | 167,083,653 | 167,083,653 |
| 2006 | $1,300,913,000 | 179,975,853 | 179,975,853 |
| 2007 | $1,470,680,000 | 167,592,137 | 167,592,137 |
| 2008 | $1,501,345,000 | 171,849,401 | 171,849,401 |
| 2009 | $1,350,232,000 | 159,679,683 | 159,679,683 |
| 2010 | $1,362,674,917 | 157,178,170 | 157,178,170 |
| 2011 | $1,489,303,043 | 154,781,829 | 154,781,829 |
Note: Quantity represents Weight in kilograms
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