The 16th edition of the FINA World Championships held in Kazan (RUS) from July 24-August 9, 2015. According to a study conducted by British company Kantar Media, the event recorded global TV viewership of 6.8 billion (total cumulative audience – 6,840,601,835), making it one of the biggest sports events on the planet
This official figure represents a 2.3 billion increase since the last edition of the FINA World Championships, held in Barcelona in 2013, where the audience was 4.5 billion. Moreover, two years ago, there was a total of 5,156 hours of dedicated coverage, while Kazan 2015 generated 5,728 hours.
The cumulative audience is based on six platforms: Live Audience, Delayed, Repeat, Highlights, News and Sports Magazine content.
Source : http://www.fina.org/