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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $157,609,795 | 723,810,138 | 723,810,138 |
| 2006 | $161,160,116 | 644,035,408 | 644,035,408 |
| 2007 | $233,665,649 | 732,502,339 | 732,502,339 |
| 2008 | $656,252,535 | 1,288,829,637 | 1,288,829,637 |
| 2009 | $328,994,511 | 1,088,421,561 | 1,088,421,561 |
| 2010 | $487,420,529 | 1,261,229,577 | 1,261,229,577 |
| 2011 | $751,230,074 | 1,711,181,168 | 1,711,181,168 |
Note: Quantity represents Weight in kilograms
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