The year 1981 was proclaimed the International Year of Disabled Persons (IYDP) by the United Nations. It called for a plan of action with an emphasis on equalization of opportunities, rehabilitation and prevention of disabilities. The slogan of IYDP was "a wheelchair in every home", defined as the right of persons with disabilities to take part fully in the life and development of their societies, enjoy living conditions equal to those of other citizens, and have an equal share in improved conditions resulting from socio-economic development.