17 dedicated, for the duration of this Agreement, to the primary purpose of housing employees of the Commission in accordance with the provisions of this Article. 2. The Republic of Panama hereby places at the disposal of the United States, without cost, the use of such housing, within the housing areas, as the United States may deem necessary for United States citizen employees and dependents throughout the duration of this Agreement. The United States may -continue to manage, maintain, improve, rent and assign such housing for United States citizen employees and dependents. 3. The use of housing units beyond those required by the United States for housing United States citizen employees and dependents at the date of entry into force of this Agreements['] shall pass to the Republic of Panama on that date. Within five years from the entry into force of this Agreement, the use of at least twenty percent of the housing units located in the former Canal Zone, formerly owned by the Panama Canal Company, shall have passed to the Republic of Panama. Thereafter, the use of additional units shall pass to the Republic of Panama in accordance with the following schedule: (a) Within ten years from the entry into force of this Agreement, the use of a total of at least thirty percent of such units shall have passed. (b) Within fifteen years, the use of a total of at least forty-five percent shall have passed. (c) Within twenty years, the use of a total of at least sixty percent shall have passed. Oct. 1, 1979. TIAS 10031