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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $743,900,801 | 4,723,179 | 4,723,179 |
| 2006 | $876,676,135 | 4,525,870 | 4,525,870 |
| 2007 | $1,266,225,228 | 4,211,616 | 4,211,616 |
| 2008 | $1,317,038,510 | 0 | 0 |
| 2009 | $2,382,544,452 | 5,350,575 | 5,350,575 |
| 2010 | $3,365,172,363 | 6,507,071 | 6,507,071 |
| 2011 | $3,221,668,558 | 8,946,102 | 8,946,102 |
Note: Quantity represents Weight in kilograms
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