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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $879,737,549 | 1,081,833 | 1,081,833 |
| 2006 | $999,183,881 | 1,539,803 | 1,539,803 |
| 2007 | $1,519,648,687 | 1,824,244 | 1,824,244 |
| 2008 | $1,411,961,746 | 13,299,967 | 13,299,967 |
| 2009 | $1,386,588,666 | 1,839,837 | 1,839,837 |
| 2010 | $2,559,899,663 | 3,295,916 | 3,295,916 |
| 2011 | $3,100,515,115 | 1,773,777 | 1,773,777 |
Note: Quantity represents Weight in kilograms
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