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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $167,807,138 | 4,176,384,731 | 4,176,384,731 |
| 2006 | $159,111,124 | 4,453,779,005 | 4,453,779,005 |
| 2007 | $195,050,910 | 3,618,963,048 | 3,618,963,048 |
| 2008 | $520,196,585 | 3,975,840,000 | 3,975,840,000 |
| 2009 | $371,757,404 | 2,036,152,814 | 2,036,152,814 |
| 2010 | $372,458,774 | 4,296,846,000 | 4,296,846,000 |
| 2011 | $630,037,191 | 5,402,910,000 | 5,402,910,000 |
Note: Quantity represents Weight in kilograms
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