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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,364,033,624 | 119,402,894 | 119,402,894 |
| 2006 | $8,820,634,234 | 119,789,918 | 119,789,918 |
| 2007 | $9,787,167,183 | 118,059,716 | 118,059,716 |
| 2008 | $9,971,664,184 | 124,362,078 | 124,362,078 |
| 2009 | $9,543,030,875 | 139,643,053 | 139,643,053 |
| 2010 | $11,001,438,642 | 147,233,951 | 147,233,951 |
| 2011 | $12,407,976,547 | 160,955,132 | 160,955,132 |
Note: Quantity represents Weight in kilograms
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