1.Promulgated on 13 June 1951 by Presidential Order
2.Appendix 1 amended and promulgated on 27 November 1953
3.Articles 9, 11, 13 to15, and Appendix 1 amended and promulgated on 17 August 1954
4.Article 8 and Appendix 1 amended and promulgated on 31 December 1955
5.Article 8 and Appendix 1 amended and promulgated on 29 December 1960
6.Articles 1 to 39 and Appendices 1 and 2 amended and promulgated on 4 May 1965
7.Article 8 and Appendix 1 amended and promulgated on 19 June 1965
8.Articles 16 and 18 and Appendix 1 amended and promulgated on 28 June 1968
9.Articles 8 and 10 and Appendix 1 amended and promulgated on 10 May 1973
10.Articles 8, 12, 16, and 18 and Appendices 1 and 2 amended and promulgated and Articles 9 to 11 and 13 to 15 deleted on 21 January 1981
11.Articles 16-1, 35-1, 37-1, 38-1, and 38-2 added; Articles 16, 17, and 32 deleted; Articles 3, 4, 6 to 8, 12, 18, 19, 30, 31, the name of Section 10, and Articles 34, 37, and 39 amended and promulgated on 25 January 1999