PGNiG`s Storage Capacity - Gas (mcm) reached 1,737 mcm in 2015. This is 15.7 % less than in the previous year.
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| Company | Unit | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 |
| PGNiG | mcm | ... | 1,295 | 1,303 | 1,647 | 1,787 | 2,092 |
Helgi Library 
