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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $16,240,174,486 | 89,000,072 | 89,000,072 |
| 2006 | $19,262,442,510 | 97,508,364 | 97,508,364 |
| 2007 | $7,657,519,306 | 88,499,263 | 88,499,263 |
| 2008 | $8,148,741,073 | 109,689,782 | 109,689,782 |
| 2009 | $6,050,875,357 | 79,752,792 | 79,752,792 |
| 2010 | $7,089,609,216 | 81,245,336 | 81,245,336 |
| 2011 | $7,405,944,706 | 83,187,304 | 83,187,304 |
Note: Quantity represents Weight in kilograms
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