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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $514,677,145 | 20,292,017 | 20,292,017 |
| 2006 | $654,778,332 | 22,656,015 | 22,656,015 |
| 2007 | $1,364,193,895 | 62,217,513 | 62,217,513 |
| 2008 | $1,459,165,099 | 59,158,958 | 59,158,958 |
| 2009 | $1,042,071,772 | 43,625,800 | 43,625,800 |
| 2010 | $1,361,764,811 | 53,144,649 | 53,144,649 |
| 2011 | $1,541,876,253 | 53,690,408 | 53,690,408 |
Note: Quantity represents Weight in kilograms
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