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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $854,826,741 | 1,791,903,841 | 1,791,903,841 |
| 2006 | $1,002,066,074 | 1,732,978,821 | 1,732,978,821 |
| 2007 | $1,049,746,077 | 1,638,894,047 | 1,638,894,047 |
| 2008 | $1,195,708,115 | 1,556,516,355 | 1,556,516,355 |
| 2009 | $901,927,116 | 1,696,359,632 | 1,696,359,632 |
| 2010 | $1,450,226,705 | 1,920,340,580 | 1,920,340,580 |
| 2011 | $1,664,080,454 | 1,798,527,129 | 1,798,527,129 |
Note: Quantity represents Weight in kilograms
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