How many constitutional amendments till now?

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26 in total, out of which three never passed (9th, 11th and 15th). I remember reading somewhere that there are 4 more amendment that have been proposed (27th, 28th, 29th and 30th) but they were never passed. i cant seem to find any details regarding these.

First Amendment (1974)
Second Amendment (1974)
Third Amendment (1975)
Fourth Amendment (1975)
Fifth Amendment (1976)
Sixth Amendment (1976)
Seventh Amendment (1977)
Eighth Amendment (1985) - validates amendments made by Gen. Zia-ul-Haq
Tenth Amendment (1987)
Twelfth Amendment (1991)
Thirteenth Amendment (1997)
Fourteenth Amendment (1997)
Sixteenth Amendment (1999)
Presented in National Assembly on January 7, 1999. [Dawn Report]
Passed by the Senate on June 3, 1999. [Dawn Report] [The News Report]
Passed by the National Assembly on July 27, 1999. [Dawn Report] [The News Report]
Seventeenth Amendment (2003) - parliamentary validation of amendments made by Gen. Pervez Musharraf's Legal Framework Order with certain changes
Passed by National Assembly on December 29, 2003, passed by the Senate on December 30, 2003, and received the President's assent on December 31, 2003.
Eighteenth Amendment (2010) - changes include repealing of amendments made by General Musharraf and the Seventeenth Amendment
Nineteenth Amendment (2011) - addresses concerns raised by the Supreme Court on the Eighteenth Amendment
Twentieth Amendment (2012) - amends provisions related to the formation of the Election Commission
Twenty-First Amendment (2015) - allows for trials for crimes related to terrorism to bypass the judiciary and be held in military courts; to remain in effect until January 7, 2017.
Twenty-Second Amendment (2016) - amends eligibility and age requirements for members of the Election Commission, provides for continuity, and adds electoral rolls for local goverments as a responsibility of the Election Commission.
Twenty-Third Amendment (2017) - revives expired provisions of the Twenty-First Amendment with certain modifications
Twenty-Fourth Amendment (2017) - modifies allocation of National Assembly seats among provinces based on the results of the 2017 census
Twenty-Fifth Amendment (2018)
Twenty-Sixth Amendment (2019)