June 1975 – August 1977
17 June 1985 – 28 June 1990
29 June 1990 – 5 July 1991
29 July 1991 – 29 July 1996
30 July 1996 – 24 July 2001
25 July 2001- 23 July 2006
24 July 2006- 6 January 2009
7 January 2009 – 22 October 2009
23 October 2009- 29 July 2010
29 July 2010 – 26 July 2011
26 July 2011 – 30 July 2016
31 July 2016 – 30 July 2021
4 August 2021 – 14 April 2022
18 April 2022 – 11 April 2023
15. Ch. Anwar-ul-Haq
20 April 2023- incumbent