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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $445,585,966 | 2,425,988,225 | 2,425,988,225 |
| 2006 | $547,253,412 | 2,320,215,028 | 2,320,215,028 |
| 2007 | $654,671,045 | 2,693,442,865 | 2,693,442,865 |
| 2008 | $876,682,954 | 2,456,022,348 | 2,456,022,348 |
| 2009 | $347,261,231 | 1,783,551,033 | 1,783,551,033 |
| 2010 | $295,478,051 | 1,104,242,942 | 1,104,242,942 |
| 2011 | $740 | 0 | 0 |
Note: Quantity represents Weight in kilograms
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