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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,694,260,114 | 26,658,856 | 26,658,856 |
| 2006 | $1,732,302,556 | 26,199,476 | 26,199,476 |
| 2007 | $411,956,363 | 6,560,802 | 6,560,802 |
| 2008 | $600,562,097 | 11,373,779 | 11,373,779 |
| 2009 | $445,343,218 | 9,929,785 | 9,929,785 |
| 2010 | $393,291,791 | 8,170,748 | 8,170,748 |
| 2011 | $455,498,781 | 9,315,044 | 9,315,044 |
Note: Quantity represents Weight in kilograms
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