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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $457,937,247 | 441,944,500 | 441,944,500 |
| 2006 | $439,711,666 | 464,813,600 | 464,813,600 |
| 2007 | $582,690,480 | 495,007,000 | 495,007,000 |
| 2008 | $560,972,416 | 483,863,000 | 483,863,000 |
| 2009 | $540,567,535 | 536,579,400 | 536,579,400 |
| 2010 | $608,674,710 | 497,387,900 | 497,387,900 |
| 2011 | $530,934,611 | 519,582,100 | 519,582,100 |
Note: Quantity represents Weight in kilograms
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