The Regulations herein are in force from April 1, 1986. 
The amended clauses of the Regulations herein are in force from July 1, 1988. 
Amendments to Article 9 herein announced on June 26, 1997 are in force from July 1, 1997.
Amendments to Article 9 herein announced on April 16, 2009 . The effective date of the amended article 9 shall come into effect as prescribed by the Ministry of Finance.
Article 3-1 of the Regulations, revised and promulgated on 21 April 2010, shall take effect as of the day of promulgation.
Articles 4 and 8 of the Regulations, revised and promulgated on 1 July 2010, shall be in force from 1 January, 2011.
Articles 8 of the Regulations, revised and promulgated on 26 July 2011, shall take effect as of the day of promulgation.