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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $345,152,081 | 733,057,028 | 733,057,028 |
| 2006 | $390,470,255 | 741,558,658 | 741,558,658 |
| 2007 | $939,162,522 | 1,633,234,139 | 1,633,234,139 |
| 2008 | $1,170,745,777 | 1,851,071,132 | 1,851,071,132 |
| 2009 | $834,818,932 | 1,872,810,498 | 1,872,810,498 |
| 2010 | $1,058,626,393 | 1,524,898,113 | 1,524,898,113 |
| 2011 | $1,205,788,153 | 1,863,311,815 | 1,863,311,815 |
Note: Quantity represents Weight in kilograms
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