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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,071,375,190 | 41,929,174 | 41,929,174 |
| 2006 | $2,069,123,943 | 44,465,315 | 44,465,315 |
| 2007 | $2,018,513,862 | 47,803,323 | 47,803,323 |
| 2008 | $2,123,027,364 | 145,705,854 | 145,705,854 |
| 2009 | $1,868,003,868 | 39,658,434 | 39,658,434 |
| 2010 | $1,912,487,961 | 42,610,666 | 42,610,666 |
| 2011 | $1,916,502,137 | 41,378,374 | 41,378,374 |
Note: Quantity represents Weight in kilograms
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