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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $812,319,700 | 800,659,192 | 800,659,192 |
| 2006 | $4,411,510,596 | 2,408,485,519 | 2,408,485,519 |
| 2007 | $4,369,364,403 | 2,102,181,765 | 2,102,181,765 |
| 2008 | $4,306,862,629 | 2,070,903,219 | 2,070,903,219 |
| 2009 | $3,020,818,925 | 2,103,933,100 | 2,103,933,100 |
| 2010 | $4,558,360,243 | 2,069,476,134 | 2,069,476,134 |
| 2011 | $5,283,700,367 | 1,939,756,587 | 1,939,756,587 |
Note: Quantity represents Weight in kilograms
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