. Civil Servant Medical Benefit Scheme (CSMBS) introduced in the 1960s, which covers government employees, their dependents and retirees. Ten percent of the population is covered in this scheme; . Social Health Insurance (SHI) which was introduced in the 1990s and covers private sector employees. Twelve percent of the population is covered in this scheme; and . Universal Coverage (UC) introduced in 2001. Seventy-four percent of the Thai population is covered by this scheme.