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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $499,599,929 | 685,431,108 | 685,431,108 |
| 2006 | $560,781,486 | 649,660,819 | 649,660,819 |
| 2007 | $651,292,372 | 663,465,217 | 663,465,217 |
| 2008 | $749,286,200 | 1,144,709,080 | 1,144,709,080 |
| 2009 | $761,791,488 | 816,167,380 | 816,167,380 |
| 2010 | $839,163,689 | 790,376,267 | 790,376,267 |
| 2011 | $952,813,723 | 833,248,821 | 833,248,821 |
Note: Quantity represents Weight in kilograms
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