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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $189,102,849 | 232,986,527 | 232,986,527 |
| 2006 | $322,405,810 | 440,398,914 | 440,398,914 |
| 2007 | $1,253,645,787 | 1,341,377,746 | 1,341,377,746 |
| 2008 | $1,460,181,821 | 1,093,868,083 | 1,093,868,083 |
| 2009 | $1,776,753,077 | 2,163,591,964 | 2,163,591,964 |
| 2010 | $2,063,810,268 | 1,820,178,901 | 1,820,178,901 |
| 2011 | $2,157,434,967 | 1,803,194,068 | 1,803,194,068 |
Note: Quantity represents Weight in kilograms
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