The FIFA U-20 World Cup, until 2005 known as the FIFA World Youth Championship, is the world championship of football for male players under the age of 20 and is organized by Fédération Internationale de Football Association (FIFA). The Championship has been awarded every two years since the first tournament in 1977 held in Tunisia.In the seventeen tournaments held, only eight nations have won the title. Argentina is the most successful team with six titles, followed by Brazil with five titles. Portugal won two titles, while Ghana, Germany, Spain, and formerly existing nations Soviet Union and Yugoslavia have won the title once each.A corresponding event for women's teams, the FIFA U-20 Women's World Cup, began in 2002 with the name "FIFA U-19 Women's World Championship" and an age limit of 19. The age limit for the women's competition was changed to 20 beginning with the 2006 FIFA U-20 Women's World Championship, and the competition was renamed as a "World Cup" in 2007 in preparation for the 2008 event.