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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,002,774,000 | 181,903,999 | 181,903,999 |
| 2006 | $2,080,783,000 | 174,208,686 | 174,208,686 |
| 2007 | $3,081,967,000 | 220,322,515 | 220,322,515 |
| 2008 | $3,550,397,000 | 239,543,637 | 239,543,637 |
| 2009 | $2,255,755,000 | 140,774,124 | 140,774,124 |
| 2010 | $3,020,810,565 | 178,873,914 | 178,873,914 |
| 2011 | $4,199,362,207 | 235,906,608 | 235,906,608 |
Note: Quantity represents Weight in kilograms
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