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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $104,652,000 | 799,753,400 | 799,753,400 |
| 2006 | $135,070,000 | 1,301,639,900 | 1,301,639,900 |
| 2007 | $193,828,000 | 1,666,357,200 | 1,666,357,200 |
| 2008 | $316,478,000 | 1,587,464,700 | 1,587,464,700 |
| 2009 | $161,536,000 | 1,179,543,200 | 1,179,543,200 |
| 2010 | $297,475,000 | 1,537,179,700 | 1,537,179,700 |
| 2011 | $393,696,000 | 1,495,990,800 | 1,495,990,800 |
Note: Quantity represents Weight in kilograms
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