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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,080,996,219 | 974,490,940 | 974,490,940 |
| 2006 | $1,182,430,942 | 936,423,899 | 936,423,899 |
| 2007 | $1,163,304,254 | 864,165,020 | 864,165,020 |
| 2008 | $1,140,045,718 | 756,380,357 | 756,380,357 |
| 2009 | $879,539,369 | 805,848,883 | 805,848,883 |
| 2010 | $1,070,815,460 | 767,881,041 | 767,881,041 |
| 2011 | $1,027,789,861 | 635,795,417 | 635,795,417 |
Note: Quantity represents Weight in kilograms
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