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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,862,683,188 | 45,293,754,351 | 45,293,754,351 |
| 2006 | $7,157,434,242 | 57,833,710,376 | 57,833,710,376 |
| 2007 | $9,899,013,001 | 56,949,042,528 | 56,949,042,528 |
| 2008 | $13,540,980,797 | 71,268,319,984 | 71,268,319,984 |
| 2009 | $8,859,232,075 | 47,746,433,077 | 47,746,433,077 |
| 2010 | $9,919,463,746 | 50,854,153,565 | 50,854,153,565 |
| 2011 | $13,757,339,265 | 45,830,715,766 | 45,830,715,766 |
Note: Quantity represents Weight in kilograms
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