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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,986,368 | 884,977,227 | 884,977,227 |
| 2006 | $6,632,668 | 621,927,450 | 621,927,450 |
| 2007 | $5,492,210 | 465,879,307 | 465,879,307 |
| 2008 | $6,825,748 | 417,766,399 | 417,766,399 |
| 2009 | $7,428,415 | 290,471,467 | 290,471,467 |
| 2010 | $6,041,437 | 238,326,214 | 238,326,214 |
Note: Quantity represents Weight in kilograms
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