The private print media, state-owned Pakistan Television Corporation (PTV), and Pakistan Broadcasting Corporation (PBC) for radio were the dominant media outlets until the beginning of the 21st century. Pakistan now has a large network of domestic, privately owned 24-hour news media and television channels. A 2016 report by the Reporters Without Borders ranked Pakistan 147th on the Press Freedom Index, while at the same time terming the Pakistani media "among the freest in Asia when it comes to covering the squabbling among politicians." The BBC terms the Pakistani media "among the most outspoken in South Asia". Pakistani media has also played a vital role in exposing corruption.