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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $462,938,268 | 452,126,416 | 452,126,416 |
| 2006 | $551,473,051 | 504,886,299 | 504,886,299 |
| 2007 | $624,770,672 | 503,836,819 | 503,836,819 |
| 2008 | $632,805,271 | 487,469,778 | 487,469,778 |
| 2009 | $447,334,512 | 351,133,240 | 351,133,240 |
| 2010 | $487,958,564 | 381,011,832 | 381,011,832 |
| 2011 | $506,906,300 | 367,489,601 | 367,489,601 |
Note: Quantity represents Weight in kilograms
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