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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,124,000 | 503,900 | 503,900 |
| 2006 | $2,445,000 | 494,800 | 494,800 |
| 2007 | $6,882,000 | 1,395,014 | 1,395,014 |
| 2008 | $244,941,000 | 50,974,300 | 50,974,300 |
| 2009 | $199,027,000 | 52,092,100 | 52,092,100 |
| 2010 | $634,000 | 76,400 | 76,400 |
| 2011 | $567,000 | 64,914 | 64,914 |
Note: Quantity represents Weight in kilograms
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