1. Promulgated on October 2,1962
2. Amendment on July 7,1992
3. Amendment to Article 14&15 ,addition of Article12-1 promulgated on April 24,1995
4. Amendment to Article 14,15,and 18 ,deletion of Article42 promulgated on August 31,1999
5. Amendment to Article 13 promulgated on December 2,2004