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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $341,943,632 | 130,138,300 | 130,138,300 |
| 2006 | $448,509,289 | 152,651,900 | 152,651,900 |
| 2007 | $520,149,996 | 172,111,700 | 172,111,700 |
| 2008 | $624,124,728 | 176,872,300 | 176,872,300 |
| 2009 | $606,413,593 | 182,559,300 | 182,559,300 |
| 2010 | $642,048,882 | 199,540,900 | 199,540,900 |
| 2011 | $663,922,895 | 190,095,000 | 190,095,000 |
Note: Quantity represents Weight in kilograms
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