Ice hockey is one of the fastest growing women's sports in the world, with the number of participants increasing by 400 percent from 1995 to 2005. In 2011, Canada had 85,827 women players, United States had 65,609, Finland 4,760, Sweden 3,075 and Switzerland 1,172. While there are not as many organized leagues for women as there are for men, there exist leagues of all levels, including the National Women's Hockey League (NWHL), Mid-Atlantic Women's Hockey League, and various European leagues, as well as university teams, national and Olympic teams, and recreational teams. The IIHF holds IIHF World Women's Championships tournaments in several divisions; championships are held annually, except that the top flight does not play in Olympic years.