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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $786,436,628 | 2,225,117,011 | 2,225,117,011 |
| 2006 | $1,345,123,954 | 3,652,194,858 | 3,652,194,858 |
| 2007 | $1,273,645,674 | 2,790,863,630 | 2,790,863,630 |
| 2008 | $621,058,726 | 597,608,074 | 597,608,074 |
| 2009 | $1,922,237 | 4,810,834 | 4,810,834 |
| 2010 | $70,493,066 | 125,159,308 | 125,159,308 |
| 2011 | $3,347 | 2,941 | 2,941 |
Note: Quantity represents Weight in kilograms
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