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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $507,009,802 | 26,726,927 | 26,726,927 |
| 2006 | $582,047,088 | 16,782,355 | 16,782,355 |
| 2007 | $544,963,467 | 13,863,470 | 13,863,470 |
| 2008 | $491,272,133 | 11,016,385 | 11,016,385 |
| 2009 | $431,736,379 | 7,685,518 | 7,685,518 |
| 2010 | $483,418,936 | 9,023,820 | 9,023,820 |
| 2011 | $477,406,137 | 8,929,845 | 8,929,845 |
Note: Quantity represents Weight in kilograms
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