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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $678,788,464 | 512,789,187 | 512,789,187 |
| 2006 | $1,355,521,788 | 551,892,171 | 551,892,171 |
| 2007 | $1,605,596,260 | 515,842,495 | 515,842,495 |
| 2008 | $895,908,827 | 440,065,825 | 440,065,825 |
| 2009 | $740,216,269 | 477,443,742 | 477,443,742 |
| 2010 | $814,631,439 | 367,317,600 | 367,317,600 |
| 2011 | $1,031,517,996 | 452,338,942 | 452,338,942 |
Note: Quantity represents Weight in kilograms
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