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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,844,224,247 | 989,417,533 | 989,417,533 |
| 2006 | $2,731,519,525 | 1,137,423,575 | 1,137,423,575 |
| 2007 | $2,864,057,940 | 1,128,706,284 | 1,128,706,284 |
| 2008 | $3,126,565,181 | 1,169,438,850 | 1,169,438,850 |
| 2009 | $1,048,167,697 | 621,830,214 | 621,830,214 |
| 2010 | $2,254,352,275 | 1,020,502,396 | 1,020,502,396 |
| 2011 | $2,646,905,281 | 1,071,255,189 | 1,071,255,189 |
Note: Quantity represents Weight in kilograms
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