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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $727,305,791 | 18,317,520 | 18,317,520 |
| 2006 | $1,017,518,910 | 17,216,159 | 17,216,159 |
| 2007 | $1,351,267,038 | 21,640,541 | 21,640,541 |
| 2008 | $1,803,730,979 | 26,390,510 | 26,390,510 |
| 2009 | $1,807,920,073 | 28,493,062 | 28,493,062 |
| 2010 | $1,916,814,040 | 28,682,412 | 28,682,412 |
| 2011 | $2,228,773,578 | 28,783,977 | 28,783,977 |
Note: Quantity represents Weight in kilograms
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