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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $561,097,840 | 1,245,315,598 | 1,245,315,598 |
| 2006 | $659,279,217 | 1,576,915,009 | 1,576,915,009 |
| 2007 | $814,797,453 | 1,518,690,010 | 1,518,690,010 |
| 2008 | $1,527,852,364 | 1,824,459,229 | 1,824,459,229 |
| 2009 | $666,484,636 | 1,523,521,968 | 1,523,521,968 |
| 2010 | $1,128,825,657 | 1,998,764,239 | 1,998,764,239 |
| 2011 | $1,159,514,825 | 1,715,278,345 | 1,715,278,345 |
Note: Quantity represents Weight in kilograms
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