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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,531,718,890 | 15,390,229 | 15,390,229 |
| 2006 | $1,584,069,380 | 16,019,048 | 16,019,048 |
| 2007 | $1,765,043,379 | 19,139,519 | 19,139,519 |
| 2008 | $1,812,860,968 | 18,180,171 | 18,180,171 |
| 2009 | $1,537,835,421 | 13,955,278 | 13,955,278 |
| 2010 | $2,125,095,599 | 19,439,602 | 19,439,602 |
| 2011 | $2,406,652,211 | 21,089,973 | 21,089,973 |
Note: Quantity represents Weight in kilograms
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