PGNiG`s Staff Cost (As % Of Total Cost) reached 8.18 % in 2015. This is 11.9 % less than in the previous year.
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| Company | Unit | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| Grupa Lotos | % | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | 2.36 | ||
| PGNiG | % | 13.5 | 14.3 | 13.8 | 11.7 | 11.1 | |||||||||
| PKN | % | ... | 2.99 | 2.48 | 2.01 | 1.82 | 1.85 |
Helgi Library 
