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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,493,186,673 | 9,155,634,176 | 9,155,634,176 |
| 2006 | $2,018,560,790 | 9,144,172,549 | 9,144,172,549 |
| 2007 | $2,068,281,783 | 8,790,833,792 | 8,790,833,792 |
| 2008 | $3,121,605,834 | 10,736,565,468 | 10,736,565,468 |
| 2009 | $2,540,908,917 | 8,558,350,347 | 8,558,350,347 |
| 2010 | $2,595,434,321 | 8,899,328,667 | 8,899,328,667 |
| 2011 | $3,074,835,823 | 8,994,687,739 | 8,994,687,739 |
Note: Quantity represents Weight in kilograms
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