fact that corporate power is combined with restrictive state regulation on issues of freedom of speech. Doğan Media Group (Aydın Doğan / Arzuhan Yalçındağ) had two-thirds of all newspaper advertising revenue in 2004, and following the 2005 purchase of Star TV had 25-30% of the TV audience. (It sold Star TV to Doğuş Media Group in 2011). Doğuş Media Group (Ayhan Şahenk / Ferit Şahenk) Turkuvaz Media Group of Çalık Holding (Ahmet Çalık) Çukurova Media Group of Çukurova Holding (Mehmet Emin Karamehmet) Ciner Media Group (Turgay Ciner) The broadcast media have a very high penetration as satellite dishes and cable systems are widely available. The "Radio and Television Supreme Council" (RTÜK) is the government body overseeing the broadcast media. TV channels gather around half of the advertising market revenues, i.e. 1 billion dollars (56% in 2005, 50% in 2008, 48.2% in 2009). The share of the print media (36% in 2005, 33% in 2008, 31.2% in 2009) and of the radio (3.4% in 2005, 3.3% in 2009) are in decline too. The advertising market is deemed relatively small when compared to the number of media, thus endangering the survival of the smaller media and constituting a barrier to the entry of new actors in the market. Turkish media also remain dependent on revenues from other activities of the economic conglomerates that own them. Print media Newspapers with oppositional editorial line against the government corresponds to 65% of daily newspapers in circulation while pro-government newspapers's share is 25%. The total number of readers of print media in Turkey is low, when compared to the big population of the country (95 newspapers per 1000 inhabitants). Circulating newspapers where estimated at around 2,450 in 2010, of which 5 national, 23 regional and other local ones. The media hubs of the country are Istanbul and Ankara. By circulation, the most popular daily newspapers are Hürriyet (330,000 daily sales in 2016), Sabah (300,000), Posta (290,000), Sözcü and Habertürk. Major Turkish daily newspapers are published every day of the year, including Sundays, religious and secular public holidays. Big media conglomerates, with substantial interests in other economic sectors, dominate the media market and own all the major print and broadcast media. These are the Doğan Group, Turkuvaz, Ciner Group, Çukurova Group and Doğuş Group: The Doğan Group is the largest Turkish media conglomerate. It owns the mainstream/conservative daily Hürriyet, the boulevard daily Posta, the sports daily Fanatik