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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $148,638,563 | 0 | 3,131,165,351 |
| 2006 | $191,057,082 | 0 | 3,552,427,574 |
| 2007 | $186,471,917 | 5,494,337 | 3,589,233,542 |
| 2008 | $186,047,230 | 0 | 3,648,090,677 |
| 2009 | $184,965,500 | 30,007,711 | 3,766,052,943 |
| 2010 | $250,714,045 | 0 | 4,617,712,752 |
| 2011 | $214,142,169 | 0 | 3,411,096,950 |
Note: Quantity represents Number of items
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