The NBA Development League, or NBA D-League, is the National Basketball Association's official minor league basketball organization. Known until the summer of 2005 as the National Basketball Development League (NBDL), the NBA D-League started with eight teams in the fall of 2001. In March 2005, NBA commissioner David Stern announced a plan to expand the NBA D-League to fifteen teams and develop it into a true minor league farm system, with each NBA D-League team affiliated with one or more NBA teams. At the conclusion of the 2013–14 NBA season, 33% of NBA players had spent time in the NBA D-League, up from 23% in 2011. Beginning in the 2015–16 NBA Development League season, the league will consist of 19 teams; all of whom will be either single-affiliated or owned by an NBA team. The Fort Wayne Mad Ants had been the lone exception, until they were acquired by the Indiana Pacers in September 2015.