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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $606,066,660 | 1,319,054,477 | 1,319,054,477 |
| 2006 | $636,570,354 | 1,258,447,301 | 1,258,447,301 |
| 2007 | $631,435,887 | 1,168,931,992 | 1,168,931,992 |
| 2008 | $774,642,994 | 1,292,805,201 | 1,292,805,201 |
| 2009 | $681,009,972 | 1,420,480,271 | 1,420,480,271 |
| 2010 | $674,788,413 | 1,401,529,008 | 1,401,529,008 |
| 2011 | $770,007,045 | 1,316,622,489 | 1,316,622,489 |
Note: Quantity represents Weight in kilograms
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