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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $451,956,418 | 864,875,514 | 864,875,514 |
| 2006 | $481,236,673 | 895,415,824 | 895,415,824 |
| 2007 | $584,670,878 | 978,737,507 | 978,737,507 |
| 2008 | $670,498,933 | 1,006,754,471 | 1,006,754,471 |
| 2009 | $630,447,293 | 980,895,766 | 980,895,766 |
| 2010 | $704,129,219 | 1,068,570,515 | 1,068,570,515 |
| 2011 | $950,432,729 | 1,307,599,929 | 1,307,599,929 |
Note: Quantity represents Weight in kilograms
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