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 $300,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $136,816,216 | 4,803,072 | 37,332,684 |
| 2006 | $176,038,575 | 6,180,013 | 33,012,071 |
| 2007 | $153,255,749 | 0 | 22,265,488 |
| 2008 | $170,921,526 | 0 | 20,762,381 |
| 2009 | $137,855,971 | 0 | 15,913,030 |
| 2010 | $239,658,414 | 0 | 24,453,614 |
| 2011 | $265,002,389 | 0 | 24,494,854 |
Note: Quantity represents Number of items
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