Among the PDRE's successes was the national literacy campaign. The literacy rate, under 10 percent during the imperial regime, increased to about 63 percent by 1984. In 1990/91 an adult literacy rate of just over 60 percent was still being reported in government as well as in some international reports. As with the 1984 data, it several wise to exercise caution with regard to the latest figure. Officials originally conducted the literacy training in five languages: Amharic, Oromo, Tigrinya, Wolaytta, and Somali. The number of languages was later expanded to fifteen, which represented about 93 percent of the population.