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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,888,831,000 | 293,348,077 | 293,348,077 |
| 2006 | $2,022,848,000 | 308,733,421 | 308,733,421 |
| 2007 | $2,455,694,000 | 326,360,613 | 326,360,613 |
| 2008 | $2,879,954,000 | 351,863,421 | 351,863,421 |
| 2009 | $1,875,797,000 | 202,126,058 | 202,126,058 |
| 2010 | $2,234,494,778 | 313,591,245 | 313,591,245 |
| 2011 | $2,759,161,129 | 372,580,948 | 372,580,948 |
Note: Quantity represents Weight in kilograms
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