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Historical Values
Year Value
1990 7 September 1980, amended 12 February 1981 and December 1988
1991 7 September 1980; amended 12 February 1981, NA December 1988, and 28 September 1990 (legalized opposition parties)
1992 7 September 1980; amended 12 February 1981, December 1988, and 28 September 1990 (legalized opposition parties)
1993 7 September 1980; amended 12 February 1981, December 1988, and 28 September 1990 (legalized opposition parties)
1994 new constitution came into force 25 September 1992
1995 new constitution came into force 25 September 1992
1996 new constitution came into force 25 September 1992
1997 new constitution came into force 25 September 1992
1998 new constitution came into force 25 September 1992
1999 new constitution came into force 25 September 1992
2000 new constitution came into force 25 September 1992
2001 new constitution came into force 25 September 1992; underwent a major revision on 23 November 1995, substantially increasing the powers of the president
2002 new constitution came into force 25 September 1992; underwent a major revision on 23 November 1995, substantially increasing the powers of the president, and a further revision in 1999, to create the position of national ombudsman (Provedor de Justica)
2003 new constitution came into force 25 September 1992; underwent a major revision on 23 November 1995, substantially increasing the powers of the president, and a further revision in 1999, to create the position of national ombudsman (Provedor de Justica)
2004 new constitution came into force 25 September 1992; underwent a major revision on 23 November 1995, substantially increasing the powers of the president, and a further revision in 1999, to create the position of national ombudsman (Provedor de Justica)
2005 new constitution came into force 25 September 1992; underwent a major revision on 23 November 1995, substantially increasing the powers of the president, and a further revision in 1999, to create the position of national ombudsman (Provedor de Justica)
2006 new constitution came into force 25 September 1992; underwent a major revision on 23 November 1995, substantially increasing the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2007 25 September 1992; a major revision on 23 November 1995 substantially increased the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2008 25 September 1992; a major revision on 23 November 1995 substantially increased the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2009 25 September 1992; a major revision on 23 November 1995 substantially increased the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2010 25 September 1992; a major revision on 23 November 1995 substantially increased the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2011 25 September 1992; a major revision on 23 November 1995 substantially increased the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2012 25 September 1992; a major revision on 23 November 1995 substantially increased the powers of the president; a 1999 revision created the position of national ombudsman (Provedor de Justica)
2013 previous 1981; latest effective 25 September 1992; revised 1995, 1999, 2010 (2010)
2014 previous 1981; latest effective 25 September 1992; revised 1995, 1999, 2010 (2010)
2015 previous 1981; latest effective 25 September 1992; revised 1995, 1999, 2010 (2015)
2016 previous 1981; latest effective 25 September 1992; revised 1995, 1999, 2010 (2016)
2017 history: previous 1981; latest effective 25 September 1992 | amendments: proposals require support of at least four-fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one-third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties cannot be am
2018 history: previous 1981; latest effective 25 September 1992 (2017) | amendments: proposals require support of at least four-fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one-third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties canno
2019 history: previous 1981; latest effective 25 September 1992 | amendments: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, cannot be
2020 history: previous 1981; latest effective 25 September 1992 | amendments: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, cannot be
2021 history: previous 1981; latest effective 25 September 1992 amendments: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, cannot be am
2022 history: previous 1981; latest effective 25 September 1992 amendments: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, cannot be am
2023 history: previous 1981; latest effective 25 September 1992 amendments: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, cannot be am
2024 history: previous 1981; latest effective 25 September 1992 amendments: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, cannot be am
2025 history: previous 1981; latest effective 25 September 1992 amendment process: proposals require support of at least four fifths of the active National Assembly membership; amendment drafts require sponsorship of at least one third of the active Assembly membership; passage requires at least two-thirds majority vote by the Assembly membership; constitutional sections, including those on national independence, form of government, political pluralism, suffrage, and human rights and liberties, canno