Seattle Kraken, for 2021–22. Major League Soccer, in recent years becoming increasingly accepted as a fifth "major league", currently has 21 U.S. teams and three Canadian teams, and will add four more U.S. teams by 2022. The Gaelic Athletic Association, which governs Gaelic games, is mostly restricted to the island of Ireland, although teams from London and New York City participate in its senior championships. Two major Australian leagues—the National Rugby League (rugby league) and A-League (association football)—have included a team from New Zealand since their inception. The vast majority of the teams competing in rugby league's Super League have been from England. Only three teams from outside the country, two from France and one from Wales, have ever competed in the league, and only one of these teams (from France) currently competes at this level. Although the Challenge Cup of rugby league currently includes teams from France, Ireland, Scotland, Serbia, and Wales, and has in the past also had teams from Canada and Russia, the overwhelming majority of the competing teams are from England. The English association football pyramid includes several clubs from Wales, although Welsh clubs do not necessarily participate at every level in a given season. As of the most recent 2019–20 season, no Welsh teams play in the Premier League following the relegation of Cardiff City, which had played at that level in 2013–14 and 2018–19. Swansea City played in the Premier League from 2011–12 to 2017–18. The Kontinental Hockey League is headquartered in Moscow and is mostly a Russian league, although in its most recent 2019–20 season it also had teams in Belarus, China, Finland, Kazakhstan, Latvia, and Slovakia. The EuroLeague in basketball is transnational in that it includes teams from multiple European countries, but is domestic in the sense of being a championship for the single entity of Europe. It is governed by Euroleague Basketball, an explicitly pan-European body that is independent of the continental governing body of FIBA Europe. This contrasts with leagues such as Super Rugby and Pro14, which operate in multiple countries with more than one team in most (Super Rugby) or all (Pro14) of their participating countries, and also make no pretense of being a championship for a continental-size region. Semi-professional and amateur leagues This section lists college and amateur leagues by total attendance. Remaining amateurism requirements in the majority of top-level sports were dropped in the late 20th century,