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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,657,114,032 | 113,869,712 | 113,869,712 |
| 2006 | $1,283,291,619 | 93,055,146 | 93,055,146 |
| 2007 | $1,795,973,943 | 103,203,015 | 103,203,015 |
| 2008 | $1,480,719,042 | 94,159,512 | 94,159,512 |
| 2009 | $889,026,581 | 58,979,521 | 58,979,521 |
| 2010 | $1,071,246,123 | 77,454,067 | 77,454,067 |
| 2011 | $942,736,754 | 54,782,666 | 54,782,666 |
Note: Quantity represents Weight in kilograms
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