The women's tournament began as an eight-team tournament featuring Canada, the US, the top five from the 1989 European championships, and one Asian qualifier. The same formula was used for 1992, 1994 and 1997, but changed following the first Olympic Women's Ice Hockey Tournament at the 1998 Nagano Olympics. The best five from the Olympic tournament were qualified for 1999, followed by the best three from qualification rounds during the Olympic year. The championship became a yearly tournament beginning in 1999 with promotion and relegation with lower ranked nations. Remaining nations play in groups of (now) six nations, with as many as five tiers.