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| Chapter | 2005 | 2006 | 2007 | 2008 |
| Salt; sulfur; earths and stone; plastering materials | $52,796,659 | $31,933,399 | $31,733,249 | $77,845,619 |
| Ores, slag and ash | $9,187 | $1,893,833 | $13,446 | $7,568 |
| Mineral fuels, mineral oils and products of their distillation | $4,350,345 | $4,060,877 | $3,432,822 | $3,810,687 |
| Total | $57,156,191 | $37,888,109 | $35,179,517 | $81,663,874 |
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