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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $623,249,000 | 58,844,472 | 58,844,472 |
| 2006 | $696,538,000 | 64,341,139 | 64,341,139 |
| 2007 | $896,990,000 | 74,442,994 | 74,442,994 |
| 2008 | $1,001,615,000 | 74,686,864 | 74,686,864 |
| 2009 | $801,874,000 | 59,505,136 | 59,505,136 |
| 2010 | $977,659,538 | 68,928,742 | 68,928,742 |
| 2011 | $1,228,776,246 | 79,028,183 | 79,028,183 |
Note: Quantity represents Weight in kilograms
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