The WNBA is the premier women's basketball league in the United States as well as the most stable and sustained women's professional sports league in the nation. Several of the 12 teams are owned by NBA teams. The women's national team has won eight Olympic gold medals and 10 FIBA World Cups. Historically, women's basketball in the United States followed a six-woman-per-team format in which three players on each team stayed on the same side of the court throughout the game. The six-person variant was abolished for college play in 1971, and over the course of the 1970s and 1980s was steadily abolished at the high school level, with the last states still sanctioning it switching girls over to the men's five-on-five code in the mid-1990s.