2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $5,000,000 $10,000,000 $15,000,000 $20,000,000 $25,000,000 $30,000,000 $35,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $21,320,744 | 3,444,942 | 3,444,942 |
| 2006 | $22,452,854 | 2,642,651 | 2,642,651 |
| 2007 | $28,801,771 | 3,743,508 | 3,743,508 |
| 2008 | $28,364,407 | 2,952,963 | 2,952,963 |
| 2009 | $23,870,781 | 2,314,742 | 2,314,742 |
| 2010 | $24,983,851 | 2,921,508 | 2,921,508 |
| 2011 | $26,502,030 | 2,834,236 | 2,834,236 |
Note: Quantity represents Weight in kilograms
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