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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,369,729,000 | 27,039,362 | 27,039,362 |
| 2006 | $1,552,413,000 | 28,384,952 | 28,384,952 |
| 2007 | $1,904,227,000 | 30,342,815 | 30,342,815 |
| 2008 | $2,023,039,000 | 30,208,177 | 30,208,177 |
| 2009 | $2,282,127,000 | 32,605,600 | 32,605,600 |
| 2010 | $2,559,867,733 | 32,646,494 | 32,646,494 |
| 2011 | $2,963,913,753 | 33,942,930 | 33,942,930 |
Note: Quantity represents Weight in kilograms
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