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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $91,440,546 | 4,051,931,976 | 4,051,931,976 |
| 2006 | $82,470,998 | 3,271,407,040 | 3,271,407,040 |
| 2007 | $97,751,074 | 3,667,256,000 | 3,667,256,000 |
| 2008 | $139,196,335 | 4,635,567,920 | 4,635,567,920 |
| 2009 | $152,403,482 | 4,609,956,984 | 4,609,956,984 |
| 2010 | $159,644,633 | 4,897,475,920 | 4,897,475,920 |
| 2011 | $168,526,193 | 4,862,552,992 | 4,862,552,992 |
Note: Quantity represents Weight in kilograms
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