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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $511,881,139 | 554,934,206 | 554,934,206 |
| 2006 | $824,557,080 | 794,541,039 | 794,541,039 |
| 2007 | $866,847,027 | 734,512,682 | 734,512,682 |
| 2008 | $968,230,455 | 752,968,001 | 752,968,001 |
| 2009 | $440,485,088 | 0 | 0 |
| 2010 | $983,164,781 | 872,099,578 | 872,099,578 |
Note: Quantity represents Weight in kilograms
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