2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $50,000,000 $100,000,000 $150,000,000 $200,000,000 $250,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $175,342,745 | 1,953,905 | 6,179,590 |
| 2006 | $204,236,353 | 2,141,151 | 6,900,730 |
| 2007 | $208,380,089 | 2,936,087 | 5,691,402 |
| 2008 | $170,598,629 | 858,514 | 3,993,912 |
| 2009 | $115,596,286 | 751,903 | 3,052,295 |
| 2010 | $90,881,071 | 524,326 | 2,550,983 |
| 2011 | $90,932,840 | 507,756 | 2,604,541 |
Note: Quantity represents Number of items
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