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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,308,854,077 | 172,137,371 | 172,137,371 |
| 2006 | $1,367,625,901 | 179,866,902 | 179,866,902 |
| 2007 | $1,516,609,662 | 182,989,032 | 182,989,032 |
| 2008 | $1,287,543,706 | 167,797,508 | 167,797,508 |
| 2009 | $1,119,849,785 | 147,119,054 | 147,119,054 |
| 2010 | $1,382,076,217 | 153,139,748 | 153,139,748 |
| 2011 | $1,414,022,824 | 211,791,828 | 211,791,828 |
Note: Quantity represents Weight in kilograms
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