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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,702,175,141 | 7,055,565,739 | 7,055,565,739 |
| 2006 | $2,866,457,243 | 6,261,790,978 | 6,261,790,978 |
| 2007 | $3,216,951,633 | 6,255,707,123 | 6,255,707,123 |
| 2008 | $3,983,398,015 | 5,506,444,905 | 5,506,444,905 |
| 2009 | $2,138,625,733 | 4,788,358,176 | 4,788,358,176 |
| 2010 | $2,979,573,658 | 5,236,597,267 | 5,236,597,267 |
Note: Quantity represents Weight in kilograms
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