Ice dance was contested for the first time at the World Championships in 1952; for most of that period, the British dominated the sport, winning 12 out of the next 16 championships. Many of the first CDs were developed during the 1930s by teams from Great Britain, some of which have been used by ice dance teams throughout the history of the sport. The CD's prominence in ice dance slowly declined. In 1952, CDs accounted for 60% of the total points dancers could earn. When the Original dance (OD) was added in 1967, it replaced the second CD. In 1988, the same year compulsory figures was removed from women's and men's single figure skating, CDs were decreased from three to two.