Zafarullah Khan Jamali, country's 20th Prime Minister, failed to complete his term of office. From the first Prime Minister, Liaquat Ali Khan (assassinated in 1951), to Zafarullah Khan Jamali, barring Zulfiqar Ali Bhutto, either military governments overthrew all the prime ministers, or were sacked by Presidents.
Following is the list of Prime Ministers from 1947 to date.

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Prime Ministers
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Nawabzada Liaquat Ali Khan           15 Aug 1947   16 Oct 1951
Khwaja Nazimuddin                    17 Oct 1951   17 Apr 1953
Mohammad Ali Bogra                   17 Apr 1953   12 Aug 1955
Chaudhry Mohammad Ali                12 Aug 1955   12 Sep 1956
Husain Shaheed Suhrawardy            12 Sep 1956   17 Oct 1957
Ismail Ibrahim Chundrigar            17 Oct 1957   16 Dec 1957
Malik Firooz Khan Noon               16 Dec 1957   27 Oct 1958
Nurul Amin                            7 Dec 1971   20 Dec 1971
Zulfiqar Ali Bhutto                  14 Aug 1973    5 Jul 1977
Mohammad Khan Junejo                 23 Mar 1985   29 May 1988
Benazir Bhutto                        2 Dec 1988    6 Aug 1990
Ghulam Mustafa Jatoi (Caretaker PM)   6 Aug 1990    6 Nov 1990
Mian Mohammad Nawaz Sharif            6 Nov 1990   18 Apr 1993
Balakh Sher Mazari   (Caretaker PM)  18 Apr 1993   26 May 1993
Mian Mohammad Nawaz Sharif           26 May 1993   18 Jul 1993
Moeen Qureshi (Caretaker PM)         18 Jul 1993   19 Oct 1993
Benazir Bhutto                       19 Oct 1993    5 Nov 1996
Malik Miraj Khalid (Caretaker PM)     5 Nov 1996   17 Feb 1997
Mian Mohammad Nawaz Sharif           17 Feb 1997   12 Oct 1999
Mir Zafarullah Khan Jamali           21 Nov 2002   26 Jun 2004
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