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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,129,555,254 | 455,315,274 | 455,315,274 |
| 2006 | $1,297,248,820 | 501,442,599 | 501,442,599 |
| 2007 | $1,389,715,176 | 467,957,207 | 467,957,207 |
| 2008 | $1,940,159,482 | 506,097,335 | 506,097,335 |
| 2009 | $1,684,363,048 | 534,700,420 | 534,700,420 |
| 2010 | $1,879,316,306 | 588,726,996 | 588,726,996 |
| 2011 | $2,297,696,408 | 576,241,031 | 576,241,031 |
Note: Quantity represents Weight in kilograms
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