2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $500,000,000 $1,000,000,000 $1,500,000,000 $2,000,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $275,516,296 | 6,022,705 | 12,881,322 |
| 2006 | $330,366,715 | 13,684,834 | 14,741,025 |
| 2007 | $386,368,700 | 0 | 16,009,916 |
| 2008 | $1,013,875,419 | 25,476,496 | 15,364,474 |
| 2009 | $1,033,838,435 | 27,139,064 | 15,232,637 |
| 2010 | $1,321,830,602 | 36,190,155 | 17,017,358 |
| 2011 | $1,521,887,311 | 50,047,715 | 17,554,848 |
Note: Quantity represents Number of items
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