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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $112,293,565 | 492,935,514 | 492,935,514 |
| 2006 | $155,279,890 | 1,243,373,696 | 1,243,373,696 |
| 2007 | $160,084,191 | 441,429,300 | 441,429,300 |
| 2008 | $177,531,587 | 500,511,830 | 500,511,830 |
| 2009 | $166,561,086 | 946,661,200 | 946,661,200 |
| 2010 | $281,306,937 | 1,077,388,937 | 1,077,388,937 |
| 2011 | $356,480,537 | 1,045,935,914 | 1,045,935,914 |
Note: Quantity represents Weight in kilograms
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