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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $182,152,238 | 732,290 | 732,290 |
| 2006 | $319,929,318 | 610,300 | 610,300 |
| 2007 | $893,091,566 | 1,467,023 | 1,467,023 |
| 2008 | $2,072,882,375 | 2,967,989 | 2,967,989 |
| 2009 | $1,602,880,022 | 4,195,276 | 4,195,276 |
| 2010 | $2,593,436,392 | 8,536,707 | 8,536,707 |
| 2011 | $2,509,160,030 | 10,330,830 | 10,330,830 |
Note: Quantity represents Weight in kilograms
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