OLiS
OLiS (Oficjalna Lista Sprzedaży; English: Official Sales Chart) is the official chart of the highest selling music albums in Poland. The chart exists since October 23, 2000 and is provided by ZPAV.
This is a chart of best selling music albums in the Polish media market, involving 50 matches. This overview is based on data from 233 points of sale: 227 stores of the largest retail chains in Poland: Empik (121 stores), Real (53 stores), Media Markt (38 stores) and Saturn (15 stores), two of the largest Polish internet stores: Merlin.pl, Rockserwis.pl and 4 retail stores. Taylor Nelson Sofres collects and compiles the information about selling.
List of number-one albums
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
| 2010 | 2011 | 2012 | 2013 |