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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,057,943,554 | 937,037,940 | 937,037,940 |
| 2006 | $1,009,908,150 | 997,514,695 | 997,514,695 |
| 2007 | $1,179,140,587 | 884,244,465 | 884,244,465 |
| 2008 | $1,252,538,101 | 957,599,668 | 957,599,668 |
| 2009 | $1,138,777,351 | 872,566,145 | 872,566,145 |
| 2010 | $1,085,540,943 | 739,903,273 | 739,903,273 |
Note: Quantity represents Weight in kilograms
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