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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $207,262,528 | 80,869,936 | 80,869,936 |
| 2006 | $280,337,828 | 105,812,158 | 105,812,158 |
| 2007 | $357,740,453 | 135,537,372 | 135,537,372 |
| 2008 | $355,450,612 | 134,618,102 | 134,618,102 |
| 2009 | $314,641,365 | 111,004,211 | 111,004,211 |
| 2010 | $448,116,461 | 135,849,618 | 135,849,618 |
| 2011 | $572,071,031 | 162,697,260 | 162,697,260 |
Note: Quantity represents Weight in kilograms
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