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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $530,843,000 | 18,927,969 | 18,927,969 |
| 2006 | $603,745,000 | 19,243,972 | 19,243,972 |
| 2007 | $8,083,099,000 | 134,005,037 | 134,005,037 |
| 2008 | $8,902,475,000 | 125,363,905 | 125,363,905 |
| 2009 | $8,173,371,000 | 101,718,988 | 101,718,988 |
| 2010 | $8,119,978,776 | 128,535,958 | 128,535,958 |
| 2011 | $8,249,982,198 | 118,948,885 | 118,948,885 |
Note: Quantity represents Weight in kilograms
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