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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,406,272,966 | 10,670,325,552 | 2,403,854 |
| 2006 | $8,532,711,740 | 10,547,552,797 | 487 |
| 2007 | $9,531,812,469 | 12,211,837,120 | 0 |
| 2008 | $11,605,001,696 | 6,180,339,134 | 0 |
| 2009 | $12,886,075,862 | 0 | 483 |
| 2010 | $17,067,890,991 | 0 | 496 |
| 2011 | $18,741,946,524 | 476 | 14,266,170 |
Note: Quantity represents Number of items
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