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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $685,527,689 | 130,165,408 | 130,165,408 |
| 2006 | $1,021,429,519 | 153,547,613 | 153,547,613 |
| 2007 | $4,459,330,477 | 725,022,827 | 725,022,827 |
| 2008 | $5,118,703,695 | 687,523,915 | 687,523,915 |
| 2009 | $4,065,783,764 | 568,753,141 | 568,753,141 |
| 2010 | $5,637,380,737 | 684,971,179 | 684,971,179 |
| 2011 | $6,390,305,496 | 684,991,312 | 684,991,312 |
Note: Quantity represents Weight in kilograms
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