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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $657,790,677 | 225,067,071 | 225,067,071 |
| 2006 | $633,323,043 | 219,466,228 | 219,466,228 |
| 2007 | $657,992,001 | 218,132,894 | 218,132,894 |
| 2008 | $646,951,499 | 145,531,363 | 145,531,363 |
| 2009 | $573,873,544 | 169,201,094 | 169,201,094 |
| 2010 | $690,157,740 | 202,517,352 | 202,517,352 |
| 2011 | $693,689,932 | 192,610,354 | 192,610,354 |
Note: Quantity represents Weight in kilograms
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