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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,791,897,722 | 1,238,439,737 | 1,238,439,737 |
| 2006 | $2,182,945,155 | 1,391,734,165 | 1,391,734,165 |
| 2007 | $2,623,193,629 | 1,499,310,251 | 1,499,310,251 |
| 2008 | $3,088,235,277 | 1,421,111,387 | 1,421,111,387 |
| 2009 | $2,594,294,059 | 1,170,482,173 | 1,170,482,173 |
| 2010 | $3,376,980,045 | 1,455,920,969 | 1,455,920,969 |
| 2011 | $3,604,339,003 | 1,364,492,130 | 1,364,492,130 |
Note: Quantity represents Weight in kilograms
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