PGNiG`s ROA reached 4.32 % in 2015. This is 25.5 % less than in the previous year.
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| Company | Unit |
| Grupa Lotos | % |
| PGNiG | % |
| PKN | % |
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| ... | ... | ... | 6.57 | 4.12 | 3.40 | 4.59 | 0.196 | |||||||||
| ... | ... | ... | ... | 4.06 | 7.50 | 4.80 | 5.17 | 3.98 | ||||||||
| 2.72 | 4.73 | 4.30 | 4.21 | 0.339 |
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