1. Announced on November 14, 1974
2. Amended on October 4, 1978
3. Amended on November 18, 1982
4. Amended on May 20, 1986
5. Amended on December 26, 1990
6. Amended on April 16, 1993
7. Amended on October 24, 1994
8. Amended on April 10, 1995
9. Amended on November 15, 1995
10. Amended on July 6, 1996
11. Amended on November 29, 1996
12. Amended on April 10, 1997
13. Amended on December 30, 2001
14. Amended on February 26, 2003
15. Amended on September 7, 2004
16. Amended on October 5, 2009
17. Amended on August 3, 2010
18. Amended on September 5, 2011
19. Amended on March 5, 2012
20. Amended on February 27, 2013
21. Amended on August 16, 2013
22. Amended on June 6, 2014
23. Amended on March 25, 2015
24. Amended on Aug 10, 2017
25. Amended on June 4, 2019
26. Amended on February 21, 2020
27. Amended on May 22, 2023