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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,275,593,574 | 9,893,686 | 9,893,686 |
| 2006 | $991,672,522 | 9,562,582 | 9,562,582 |
| 2007 | $870,452,563 | 9,778,565 | 9,778,565 |
| 2008 | $860,864,698 | 7,851,721 | 7,851,721 |
| 2009 | $865,697,877 | 8,307,407 | 8,307,407 |
| 2010 | $737,711,608 | 8,865,773 | 8,865,773 |
| 2011 | $849,734,766 | 9,977,571 | 9,977,571 |
Note: Quantity represents Weight in kilograms
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