As the club gained success in European club tournaments in the 1980s and 1990s, and thousands of IFK fans travelled to Hamburg, Barcelona, Dundee, Milan, Manchester and Munich, the supporters gained influence on the club, for example by lending money to the almost bankrupt IFK Göteborg so the team could go to Valencia to play the quarter-final in the UEFA Cup in 1982, or by being the main force behind the move back to Gamla Ullevi in 1992. The early 1990s saw a downward trend in attendance numbers, even though the club was successful on the pitch, but the trend turned in the later years of the decade and the first few years of the new millennium brought the club's highest average attendance since the early 1980s.