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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,059,975,364 | 22,767,568 | 22,767,568 |
| 2006 | $717,968,663 | 28,005,004 | 28,005,004 |
| 2007 | $589,045,625 | 21,857,980 | 21,857,980 |
| 2008 | $362,435,521 | 8,219,559 | 8,219,559 |
| 2009 | $222,336,050 | 8,273,658 | 8,273,658 |
| 2010 | $270,921,882 | 5,877,412 | 5,877,412 |
| 2011 | $164,503,601 | 2,426,621 | 2,426,621 |
Note: Quantity represents Weight in kilograms
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