1.Promulgated on January 24, 1931
2.Amended on September 25,1996
3.Amended on February 2, 2000
4.Amended on February 2, 2000
5.As amended on June 26, 2002
6.Amended on May 23, 2007
7.Amended on May 23,2008
8.Amended article 15 on December 30,2009
9.Amended on Dec 26,2012
10.Amended on January 13,2021