PKN`s Days Sales Of Inventory reached 53.0 days in 2015. This is 43.3 % more 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 | days | ... | ... | ... | 88.3 | 97.5 | 82.3 | 73.3 | 82.1 | |||||||||
| PGNiG | days | ... | ... | ... | ... | 39.9 | 32.8 | 54.1 | 64.1 | 64.2 | ||||||||
| PKN | days | 67.7 | 57.9 | 63.3 | 50.9 | 48.4 |
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