2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $50,000,000 $100,000,000 $150,000,000 $200,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $76,579,000 | 7,283,651 | 7,283,651 |
| 2006 | $91,257,000 | 8,736,762 | 8,736,762 |
| 2007 | $101,579,000 | 9,056,959 | 9,056,959 |
| 2008 | $131,576,000 | 10,360,666 | 10,360,666 |
| 2009 | $90,788,000 | 7,967,992 | 7,967,992 |
| 2010 | $132,839,541 | 11,988,937 | 11,988,937 |
| 2011 | $174,461,296 | 14,605,879 | 14,605,879 |
Note: Quantity represents Weight in kilograms
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