2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $10,000,000 $20,000,000 $30,000,000 $40,000,000 $50,000,000 $60,000,000 $70,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $29,404,854 | 1,381,801 | 430 |
| 2006 | $37,097,498 | 1,522,088 | 543 |
| 2007 | $63,448,488 | 2,292,672 | 847 |
| 2008 | $33,976,877 | 1,572,913 | 473 |
| 2009 | $22,479,099 | 844,632 | 270 |
| 2010 | $23,980,386 | 943,257 | 328 |
| 2011 | $29,041,087 | 1,068,804 | 454 |
Note: Quantity represents Number of items
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