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(1 kEPP = 1000 environmental pollution points)
| 2005: | 25'972'570 | kEPP | 2'173 | kEPP/tonne of finished product |
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|  | | |
| 2004: | 26'069'835 | kEPP | 2'242 | kEPP/tonne of finished product |
| 2003: | 25'300'162 | kEPP | 2'323 | kEPP/tonne of finished product |
| 2002: | 24'706'615 | kEPP | 2'188 | kEPP/tonne of finished product |
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