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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,271,283,219 | 998,014,648 | 998,014,648 |
| 2006 | $1,462,282,348 | 1,013,044,265 | 1,013,044,265 |
| 2007 | $1,735,197,298 | 1,053,912,737 | 1,053,912,737 |
| 2008 | $1,987,653,078 | 1,169,381,740 | 1,169,381,740 |
| 2009 | $1,404,364,343 | 797,012,176 | 797,012,176 |
| 2010 | $1,744,138,799 | 1,050,179,580 | 1,050,179,580 |
Note: Quantity represents Weight in kilograms
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