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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $396,202,500 | 40,493,361 | 40,493,361 |
| 2006 | $461,951,247 | 50,313,357 | 50,313,357 |
| 2007 | $536,261,991 | 51,137,618 | 51,137,618 |
| 2008 | $541,362,238 | 47,067,265 | 47,067,265 |
| 2009 | $429,736,391 | 44,170,030 | 44,170,030 |
| 2010 | $549,083,705 | 56,064,239 | 56,064,239 |
| 2011 | $611,056,011 | 57,445,312 | 57,445,312 |
Note: Quantity represents Weight in kilograms
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