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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,276,440,585 | 5,250,042,087 | 5,250,042,087 |
| 2006 | $1,380,368,814 | 5,983,433,562 | 5,983,433,562 |
| 2007 | $190,904,449 | 1,254,763,438 | 1,254,763,438 |
| 2008 | $188,406,863 | 1,213,942,862 | 1,213,942,862 |
| 2009 | $127,764,119 | 940,141,712 | 940,141,712 |
| 2010 | $126,866,535 | 991,281,256 | 991,281,256 |
| 2011 | $131,281,575 | 877,834,973 | 877,834,973 |
Note: Quantity represents Weight in kilograms
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