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(1 kEPP = 1000 environmental pollution points)
| 2005: | 44'243'938 | kEPP | 3'702 | kEPP/tonne of finished product |
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|  | | |
| 2004: | 54'768'276 | kEPP | 4'700 | kEPP/tonne of finished product |
| 2003: | 54'684'644 | kEPP | 5'020 | kEPP/tonne of finished product |
| 2002: | 63'029'129 | kEPP | 5'582 | kEPP/tonne of finished product |
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