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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $301,040,250 | 901,369,636 | 901,369,636 |
| 2006 | $427,376,344 | 1,018,807,488 | 1,018,807,488 |
| 2007 | $508,895,552 | 1,061,617,088 | 1,061,617,088 |
| 2008 | $367,749,274 | 560,125,276 | 560,125,276 |
| 2009 | $438,037,769 | 921,756,482 | 921,756,482 |
| 2010 | $639,166,576 | 1,066,308,111 | 1,066,308,111 |
| 2011 | $754,197,682 | 951,698,376 | 951,698,376 |
Note: Quantity represents Weight in kilograms
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