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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $8,419,529,346 | 605,120,494 | 605,120,494 |
| 2006 | $8,897,336,569 | 649,072,737 | 649,072,737 |
| 2007 | $11,051,939,908 | 801,409,085 | 801,409,085 |
| 2008 | $11,423,274,182 | 756,026,251 | 756,026,251 |
| 2009 | $9,898,701,419 | 600,359,890 | 600,359,890 |
| 2010 | $14,974,703,654 | 867,499,833 | 867,499,833 |
| 2011 | $16,709,751,017 | 893,469,249 | 893,469,249 |
Note: Quantity represents Weight in kilograms
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