From 1977 onward, per capita income in the country rose to more than US$11,000, the fifth-highest in Africa, while the Human Development Index became the highest in Africa and greater than that of Saudi Arabia. This was achieved without borrowing any foreign loans, keeping Libya debt-free. In addition, the country's literacy rate rose from 10% to 90%, life expectancy rose from 57 to 77 years, employment opportunities were established for migrant workers, and welfare systems were introduced that allowed access to free education, free healthcare, and financial assistance for housing. The Great Manmade River was also built to allow free access to fresh water across large parts of the country. In addition, financial support was provided for university scholarships and employment programs.