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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $369,589,170 | 1,805,574,844 | 1,805,574,844 |
| 2006 | $52,451,956 | 313,579,363 | 313,579,363 |
| 2007 | $4,001,287 | 14,080,928 | 14,080,928 |
| 2008 | $7,092,896 | 31,500,187 | 31,500,187 |
| 2009 | $122,691,982 | 562,814,340 | 562,814,340 |
| 2010 | $128,760,818 | 554,216,182 | 554,216,182 |
| 2011 | $248,745,221 | 798,932,334 | 798,932,334 |
Note: Quantity represents Weight in kilograms
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