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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,086,195,000 | 1,071,367,465 | 1,071,367,465 |
| 2006 | $7,956,418,000 | 1,171,994,520 | 1,171,994,520 |
| 2007 | $7,102,376,000 | 954,639,151 | 954,639,151 |
| 2008 | $7,020,544,000 | 882,266,347 | 882,266,347 |
| 2009 | $4,997,695,000 | 550,175,723 | 550,175,723 |
| 2010 | $5,980,848,453 | 701,516,092 | 701,516,092 |
| 2011 | $7,067,076,892 | 798,799,574 | 798,799,574 |
Note: Quantity represents Weight in kilograms
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