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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $586,924,691 | 1,067,188,375 | 1,067,188,375 |
| 2006 | $564,562,232 | 1,043,958,819 | 1,043,958,819 |
| 2007 | $584,474,884 | 970,846,629 | 970,846,629 |
| 2008 | $825,843,280 | 1,092,997,231 | 1,092,997,231 |
| 2009 | $1,012,704,220 | 1,252,811,170 | 1,252,811,170 |
| 2010 | $844,749,067 | 1,109,584,043 | 1,109,584,043 |
| 2011 | $898,994,760 | 1,064,745,781 | 1,064,745,781 |
Note: Quantity represents Weight in kilograms
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