Under the direction of The Football Association, the National League System evolved over many years. Today's pyramid can be said to be barely twenty years old. Leagues have formed and dissolved over the years and reorganisations have taken place every few years as a result. Beginning with the 2004–05 season, Phase One of the latest change was introduced with the formation of a Conference North and Conference South immediately below the Football Conference, renamed Conference Premier, dropping the top divisions of the Southern League, Isthmian League, and Northern Premier League down one level. The Conference North and South have since been renamed the National League North and South.