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(1 kUPP = 1000 environmental pollution points)
| 2005: | 80'838'110 | kEPP | 6'953 | kEPP/tonne of finished product |
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| 2004: | 80'838'110 | kEPP | 6'953 | kEPP/tonne of finished product |
| 2003: | 79'984'806 | kEPP | 7'343 | kEPP/tonne of finished product |
| 2002: | 87'735'834 | kEPP | 7'771 | kEPP/tonne of finished product |
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