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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $522,868,942 | 1,072,802,047 | 1,072,802,047 |
| 2006 | $577,021,355 | 979,666,028 | 979,666,028 |
| 2007 | $730,551,585 | 996,056,624 | 996,056,624 |
| 2008 | $601,169,052 | 717,721,405 | 717,721,405 |
| 2009 | $518,514,864 | 491,068,129 | 491,068,129 |
| 2010 | $928,532,579 | 1,251,210,644 | 1,251,210,644 |
Note: Quantity represents Weight in kilograms
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