WWE is the largest professional wrestling promotion in the world. It has promoted some of the most successful wrestlers and storylines, and featured some of the most iconic and significant matches and moments in the history of sports entertainment. WWE currently airs several high-profile programs such as "Raw" and "SmackDown" in more than 150 countries, hosts 12 pay-per-view events a year including WrestleMania, and holds approximately 320 live events a year throughout the world. In 2014, WWE launched the first 24/7 streaming network which would eventually showcase the entire WWE video library.