2004 2005 2006 2007 2008 2009 2010 2011 2012 $0 $2,000,000 $4,000,000 $6,000,000 $8,000,000
| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,260,990 | 8,772,223 | 8,772,223 |
| 2006 | $3,479,248 | 8,618,144 | 8,618,144 |
| 2007 | $4,007,994 | 8,259,900 | 8,259,900 |
| 2008 | $6,078,485 | 10,173,282 | 10,173,282 |
| 2009 | $3,402,934 | 12,176,998 | 12,176,998 |
| 2010 | $6,531,932 | 16,044,537 | 16,044,537 |
| 2011 | $6,900,029 | 15,248,890 | 15,248,890 |
Note: Quantity represents Weight in kilograms
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