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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $342,205,429 | 1,611,438,989 | 1,611,438,989 |
| 2006 | $420,808,900 | 1,836,825,302 | 1,836,825,302 |
| 2007 | $678,703,377 | 1,842,665,449 | 1,842,665,449 |
| 2008 | $1,270,669,240 | 1,370,505,206 | 1,370,505,206 |
| 2009 | $262,144,654 | 741,749,480 | 741,749,480 |
| 2010 | $576,000,158 | 1,302,879,929 | 1,302,879,929 |
| 2011 | $1,261,312,195 | 2,154,088,411 | 2,154,088,411 |
Note: Quantity represents Weight in kilograms
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