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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,511,239,844 | 147,886,754 | 147,886,754 |
| 2006 | $1,507,521,376 | 124,749,861 | 124,749,861 |
| 2007 | $1,850,076,766 | 147,994,193 | 147,994,193 |
| 2008 | $2,032,024,159 | 142,472,192 | 142,472,192 |
| 2009 | $1,289,293,675 | 71,698,512 | 71,698,512 |
| 2010 | $1,492,048,309 | 91,210,941 | 91,210,941 |
| 2011 | $1,895,769,536 | 106,415,738 | 106,415,738 |
Note: Quantity represents Weight in kilograms
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