PGNiG`s Net Margin reached 5.85 % in 2015. This is 28.9 % less than in the previous year.
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| Company | Unit | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| Grupa Lotos | % | ... | ... | ... | 6.29 | 3.45 | 2.22 | 2.80 | 0.138 | |||||||||
| PGNiG | % | ... | ... | ... | 6.39 | 11.5 | 7.63 | 7.80 | 5.99 | |||||||||
| PKN | % | 1.93 | 2.84 | 2.21 | 1.95 | 0.155 |
Helgi Library 
