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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $723,886,000 | 48,818,537 | 48,818,537 |
| 2006 | $886,875,000 | 55,401,012 | 55,401,012 |
| 2007 | $1,278,160,000 | 87,681,272 | 87,681,272 |
| 2008 | $1,415,051,000 | 83,259,683 | 83,259,683 |
| 2009 | $1,163,644,000 | 67,080,719 | 67,080,719 |
| 2010 | $1,535,498,804 | 112,116,090 | 112,116,090 |
| 2011 | $1,956,720,460 | 158,499,982 | 158,499,982 |
Note: Quantity represents Weight in kilograms
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