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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $61,291,950 | 2,024,118,066 | 2,024,118,066 |
| 2006 | $65,643,677 | 1,768,788,009 | 1,768,788,009 |
| 2007 | $50,048,237 | 1,307,059,507 | 1,307,059,507 |
| 2008 | $51,061,184 | 1,081,766,935 | 1,081,766,935 |
| 2009 | $29,276,462 | 560,865,270 | 560,865,270 |
| 2010 | $18,298,317 | 326,178,552 | 326,178,552 |
| 2011 | $10,770,009 | 141,028,077 | 141,028,077 |
Note: Quantity represents Weight in kilograms
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