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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $613,114,178 | 532,849,408 | 532,849,408 |
| 2006 | $685,528,504 | 555,812,574 | 555,812,574 |
| 2007 | $754,202,024 | 567,793,019 | 567,793,019 |
| 2008 | $707,381,747 | 437,507,332 | 437,507,332 |
| 2009 | $720,291,225 | 460,891,996 | 460,891,996 |
| 2010 | $840,191,251 | 464,327,385 | 464,327,385 |
| 2011 | $912,084,933 | 496,131,486 | 496,131,486 |
Note: Quantity represents Weight in kilograms
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