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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,561,597,737 | 178,589,688 | 93,341 |
| 2006 | $1,242,552,912 | 129,961,869 | 40,188 |
| 2007 | $1,011,381,884 | 102,582,263 | 33,714 |
| 2008 | $650,899,803 | 75,454,912 | 18,778 |
| 2009 | $221,343,424 | 30,321,021 | 5,594 |
| 2010 | $337,018,169 | 42,562,861 | 8,545 |
| 2011 | $420,244,761 | 50,216,257 | 11,255 |
Note: Quantity represents Number of items
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