World Rugby organises the Rugby World Cup, which has been held every four years since 1987, the sport's most recognised and most profitable competition. Despite the profitability of the Rugby World Cup, the majority of its revenues and viewers come from a small number of countries. For the 2007 Rugby World Cup final, 87% of viewers came from the Five Nations (England, France, Wales, Ireland, Scotland), 15% came from the Tri-Nations (South Africa, Australia, and New Zealand), with just 2% of viewers coming from all other countries.