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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $416,904,000 | 509,328,722 | 509,328,722 |
| 2006 | $514,772,000 | 481,490,400 | 481,490,400 |
| 2007 | $806,998,000 | 671,019,600 | 671,019,600 |
| 2008 | $1,011,891,000 | 667,381,438 | 667,381,438 |
| 2009 | $502,800,000 | 542,482,479 | 542,482,479 |
| 2010 | $839,390,574 | 740,865,800 | 740,865,800 |
| 2011 | $894,089,258 | 604,494,179 | 604,494,179 |
Note: Quantity represents Weight in kilograms
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