PKN`s Operating Cost Growth reached -34.0 % in 2015. This is 151 % less than in the previous year.
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| Company | Unit |
| Grupa Lotos | % |
| PGNiG | % |
| PKN | % |
| 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ||
| 72.2 | 4.21 | -5.82 | 32.3 | 8.17 | ||||||||
| ... | 5.78 | -7.52 | 6.43 | 16.2 | -7.39 |
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