2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $20,000,000 $40,000,000 $60,000,000 $80,000,000 $100,000,000 $120,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $42,275,514 | 5,642,380 | 5,642,380 |
| 2006 | $47,220,202 | 6,552,589 | 6,552,589 |
| 2007 | $64,915,864 | 7,897,057 | 7,897,057 |
| 2008 | $65,060,976 | 6,769,859 | 6,769,859 |
| 2009 | $38,773,551 | 4,812,650 | 4,812,650 |
| 2010 | $58,949,146 | 6,464,377 | 6,464,377 |
| 2011 | $101,452,065 | 8,148,318 | 8,148,318 |
Note: Quantity represents Weight in kilograms
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