The NFL, or National Football League, is an American professional sports league formed in 1920 and consisting of 32 teams across the country. The league is divided into two divisions – the National Football Conference (NFC) and the American Football Conference (AFC), both of which play a seventeen-game regular season from September to January. Teams from both conferences compete in a playoff season, culminating in the Super Bowl to determine the annual league champions. The NFL is renowned for having the highest average attendance of any professional sports league in the world, and some of the most watched televised games in the country. They are also the wealthiest sports league based on revenue.