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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $806,923,190 | 2,281,182,335 | 2,281,182,335 |
| 2006 | $793,227,693 | 1,951,143,923 | 1,951,143,923 |
| 2007 | $824,846,023 | 1,693,346,890 | 1,693,346,890 |
| 2008 | $1,212,421,351 | 2,226,345,833 | 2,226,345,833 |
| 2009 | $1,425,841,793 | 1,705,585,179 | 1,705,585,179 |
| 2010 | $1,363,866,351 | 2,036,083,487 | 2,036,083,487 |
| 2011 | $1,389,013,307 | 1,915,804,788 | 1,915,804,788 |
Note: Quantity represents Weight in kilograms
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