The Council of Indigenous Peoples has supported efforts to protect and revitalize the languages spoken by Taiwanese indigenous peoples. In 2001, the Council commissioned the first proficiency tests for indigenous languages in Taiwan. In 2005, the Council established a romanized writing system for all Taiwanese indigenous languages. The annual exam later began to wane in popularity; in 2009, the proficiency test for the Thao, Saaroa, and Tona Rukai languages had no participants, and the passing rate of test-takers dropped five percent from the previous year. In 2013, the Council published an online dictionary of seven indigenous languages: Bunun, Saisiyat, Tsou, Truku, Thao, Kanakanavu, and Tao. The Council consulted with tribal elders, speakers of the languages, and linguists to create the dictionary. The Council has recruited speakers of indigenous languages to study the rates of comprehension and use of those languages.