2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $500,000,000 $1,000,000,000 $1,500,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $46,137,282 | 562,025 | 146,375 |
| 2006 | $52,878,131 | 727,793 | 22,121 |
| 2007 | $1,259,956,439 | 9,229,390 | 0 |
| 2008 | $1,261,577,266 | 7,379,997 | 7,457,588 |
| 2009 | $998,653,400 | 5,932,483 | 0 |
| 2010 | $1,322,738,344 | 7,171,990 | 0 |
| 2011 | $1,318,199,879 | 6,270,940 | 0 |
Note: Quantity represents Number of items
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