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Historical Values
Year Value
1990 5 October 1988
1991 5 October 1988
1992 5 October 1988
1993 5 October 1988
1994 5 October 1988
1995 5 October 1988
1996 5 October 1988
1997 5 October 1988
1998 5 October 1988
1999 5 October 1988
2000 5 October 1988
2001 5 October 1988
2002 5 October 1988
2003 5 October 1988
2004 5 October 1988
2005 5 October 1988
2006 5 October 1988
2007 5 October 1988
2008 5 October 1988
2009 5 October 1988
2010 5 October 1988
2011 5 October 1988
2012 5 October 1988
2013 several previous; latest ratified 5 October 1988; amended many times, last in 2012 (2012)
2014 several previous; latest ratified 5 October 1988; amended many times, last in 2012 (2012)
2015 several previous; latest ratified 5 October 1988; amended many times, last in 2015 (2015)
2016 several previous; latest ratified 5 October 1988; amended many times, last in 2016 (2016)
2017 several previous; latest ratified 5 October 1988; amended many times, last in 2016 (2016)
2018 history: several previous; latest ratified 5 October 1988 (2018) | amendments: proposed by at least one-third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of 2 readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees canno
2019 history: several previous; latest ratified 5 October 1988 | amendments: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees cannot be
2020 history: several previous; latest ratified 5 October 1988 | amendments: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees cannot be
2021 history: several previous; latest ratified 5 October 1988 amendments: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees cannot be am
2022 history: several previous; latest ratified 5 October 1988 amendments: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees cannot be am
2023 history: several previous; latest ratified 5 October 1988 amendments: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees cannot be am
2024 history: several previous; latest ratified 5 October 1988 amendments: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees cannot be am
2025 history: several previous; latest ratified 5 October 1988 amendment process: proposed by at least one third of either house of the National Congress, by the president of the republic, or by simple majority vote by more than half of the state legislative assemblies; passage requires at least three-fifths majority vote by both houses in each of two readings; constitutional provisions affecting the federal form of government, separation of powers, suffrage, or individual rights and guarantees canno