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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,029,343 | 91,088,232 | 91,088,232 |
| 2006 | $7,692,291 | 92,362,071 | 92,362,071 |
| 2007 | $9,642,724 | 94,994,331 | 94,994,331 |
| 2008 | $11,364,662 | 101,423,051 | 101,423,051 |
| 2009 | $12,214,818 | 120,708,374 | 120,708,374 |
| 2010 | $14,766,716 | 116,839,816 | 116,839,816 |
| 2011 | $39,154,670 | 322,557,542 | 322,557,542 |
Note: Quantity represents Weight in kilograms
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