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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,296,883,290 | 1,280,084,888 | 1,280,084,888 |
| 2006 | $1,341,960,433 | 1,198,248,203 | 1,198,248,203 |
| 2007 | $1,593,843,394 | 1,213,349,000 | 1,213,349,000 |
| 2008 | $1,533,054,657 | 1,065,188,774 | 1,065,188,774 |
| 2009 | $1,348,250,076 | 1,106,365,071 | 1,106,365,071 |
| 2010 | $1,558,802,824 | 1,077,239,822 | 1,077,239,822 |
| 2011 | $1,570,207,786 | 963,715,510 | 963,715,510 |
Note: Quantity represents Weight in kilograms
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