2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $50,000 $100,000 $150,000 $200,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $91,394 | 4,204 | 5,884 |
| 2006 | $83,348 | 55,183 | 5,366 |
| 2007 | $180,534 | 82,461 | 0 |
| 2008 | $58,403 | 35,314 | 0 |
| 2009 | $63,008 | 44,745 | 0 |
| 2010 | $139,551 | 138,299 | 0 |
| 2011 | $113,919 | 25,240 | 0 |
Note: Quantity represents Number of pairs
|
|
