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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $370,643,667 | 476,107,955 | 476,107,955 |
| 2006 | $347,225,623 | 395,130,637 | 395,130,637 |
| 2007 | $205,107,225 | 235,747,099 | 235,747,099 |
| 2008 | $27,166,263 | 35,452,000 | 35,452,000 |
| 2009 | $19,060,151 | 25,794,960 | 25,794,960 |
| 2010 | $33,580,401 | 36,932,200 | 36,932,200 |
| 2011 | $51,631,394 | 42,565,750 | 42,565,750 |
Note: Quantity represents Weight in kilograms
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