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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $185,968,000 | 64,826,700 | 64,826,700 |
| 2006 | $176,540,000 | 59,498,500 | 59,498,500 |
| 2007 | $198,099,000 | 60,143,700 | 60,143,700 |
| 2008 | $267,090,000 | 71,913,700 | 71,913,700 |
| 2009 | $251,534,000 | 82,731,900 | 82,731,900 |
| 2010 | $260,547,076 | 87,810,300 | 87,810,300 |
| 2011 | $287,221,032 | 87,024,235 | 87,024,235 |
Note: Quantity represents Weight in kilograms
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