. The public health insurance system took firm hold in the 1960s, and benefit levels were improved throughout the 1970s. When a health insurance system that covered the entire population was established in 1961, benefits covered 100 percent of costs for insured persons and 50 percent for their dependents in employer-based insurance schemes, while National Health Insurance covered 50 percent for both heads of households and household members. Thereafter, these benefit levels were improved step by step, and they were raised to 70 percent for