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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $684,598,856 | 173,664,605 | 173,664,605 |
| 2006 | $880,268,535 | 212,696,205 | 212,696,205 |
| 2007 | $926,282,890 | 193,037,514 | 193,037,514 |
| 2008 | $1,027,110,538 | 225,636,647 | 225,636,647 |
| 2009 | $601,803,212 | 101,323,946 | 101,323,946 |
| 2010 | $1,005,611,263 | 195,650,609 | 195,650,609 |
| 2011 | $1,250,077,110 | 206,847,452 | 206,847,452 |
Note: Quantity represents Weight in kilograms
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