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
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $59,459,911 | 8,329,347 | 8,329,347 |
| 2006 | $67,608,087 | 9,504,955 | 9,504,955 |
| 2007 | $78,990,677 | 8,971,393 | 8,971,393 |
| 2008 | $72,268,211 | 7,350,520 | 7,350,520 |
| 2009 | $36,809,392 | 4,911,683 | 4,911,683 |
| 2010 | $53,433,330 | 5,548,345 | 5,548,345 |
| 2011 | $84,125,222 | 5,901,902 | 5,901,902 |
Note: Quantity represents Weight in kilograms
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