Millwall have been promoted eleven times (five as champions) and relegated nine times. They reached the 2004 FA Cup Final, losing to Manchester United, but still qualified for the UEFA Cup the following season, playing in Europe for the first time in their history. They've also reached the FA Cup quarter-finals on eleven separate occasions, and the semi-finals four times; in 1900, 1903, 1937 and 2013. Millwall have also reached the quarter-finals of the League Cup on three separate occasions, in 1974, 1977 and 1995. Millwall have reached the Football League play-offs eight times. They were play-off semi-finalists in 1991, 1994, 2000, 2002, finalists in 2009 and 2016, and they were promoted as winners in 2010 and 2017. The Lions won the Football League Group Cup in 1983 and were runners up in the Football League Trophy in 1999. Richard Parker holds the record for most goals scored in a season with 38, which he set in the 1926–27 season. Millwall's highest average home attendance is 27,373, which they set in the 1938–39 season just before the Second World War broke out.