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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,097,485,309 | 999,868,828 | 999,868,828 |
| 2006 | $1,319,783,592 | 1,206,037,284 | 1,206,037,284 |
| 2007 | $1,494,394,587 | 1,259,719,451 | 1,259,719,451 |
| 2008 | $1,946,318,010 | 1,510,975,928 | 1,510,975,928 |
| 2009 | $1,623,741,686 | 1,350,493,062 | 1,350,493,062 |
| 2010 | $1,576,364,940 | 1,391,863,175 | 1,391,863,175 |
| 2011 | $1,623,210,791 | 1,403,156,926 | 1,403,156,926 |
Note: Quantity represents Weight in kilograms
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