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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,602,825,559 | 1,184,538,001 | 1,184,538,001 |
| 2006 | $2,258,510,688 | 1,143,771,376 | 1,143,771,376 |
| 2007 | $641,047,604 | 323,300,969 | 323,300,969 |
| 2008 | $606,709,411 | 240,113,105 | 240,113,105 |
| 2009 | $368,308,909 | 218,105,384 | 218,105,384 |
| 2010 | $637,360,194 | 211,977,534 | 211,977,534 |
| 2011 | $647,277,285 | 142,609,181 | 142,609,181 |
Note: Quantity represents Weight in kilograms
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