The mass media in Turkey includes a wide variety of domestic and foreign periodicals expressing disparate views, and domestic newspapers are extremely competitive. However, media ownership is concentrated in the hands of a few large private media groups which are typically part of wider conglomerates controlled by wealthy individuals, which limits the views that are presented. In addition, the companies are willing to use their influence to support their owners' wider business interests, including by trying to maintain friendly relations with the government. The media exert a strong influence on public opinion. Censorship in Turkey is also an issue, and in the 2000s Turkey has seen many journalists arrested and writers prosecuted. On Reporters Without Borders' Press Freedom Index it has fallen from being ranked around 100 in 2005 to around 150 in 2013.