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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,621,779,939 | 198,747,549 | 198,747,549 |
| 2006 | $1,942,965,246 | 248,492,112 | 248,492,112 |
| 2007 | $1,519,288,461 | 175,700,513 | 175,700,513 |
| 2008 | $1,465,298,765 | 155,056,491 | 155,056,491 |
| 2009 | $989,104,744 | 101,178,574 | 101,178,574 |
| 2010 | $1,287,030,399 | 155,149,823 | 155,149,823 |
Note: Quantity represents Weight in kilograms
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