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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $813,063,909 | 316,233,546 | 316,233,546 |
| 2006 | $1,034,327,558 | 338,008,530 | 338,008,530 |
| 2007 | $1,111,385,119 | 308,401,651 | 308,401,651 |
| 2008 | $1,164,330,556 | 289,696,182 | 289,696,182 |
| 2009 | $535,080,094 | 119,348,789 | 119,348,789 |
| 2010 | $960,311,098 | 228,124,958 | 228,124,958 |
| 2011 | $1,392,876,019 | 292,038,378 | 292,038,378 |
Note: Quantity represents Weight in kilograms
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