Back to Country Profile
Historical Values
Year Value
1990 5 June 1979
1991 5 June 1979
1992 5 June 1979
1993 5 June 1979 note: new constitution now being drafted by multiparty conference, to take effect in mid-1993
1994 18 June 1993
1995 18 June 1993
1996 18 June 1993
1997 18 June 1993
1998 18 June 1993
1999 18 June 1993
2000 18 June 1993
2001 18 June 1993
2002 18 June 1993
2003 18 June 1993
2004 18 June 1993
2005 18 June 1993
2006 18 June 1993
2007 18 June 1993
2008 18 June 1993
2009 18 June 1993
2010 18 June 1993
2011 18 June 1993
2012 18 June 1993
2013 previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993; amended many times, last in 2011 (2011)
2014 previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993; amended many times, last in 2011 (2011)
2015 previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993; amended many times, last in 2011 (2015)
2016 previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993; amended several times, last in 2011 (2016)
2017 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 | amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country’s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a r
2018 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 (2017) | amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country’s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters
2019 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 | amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country’s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a r
2020 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 | amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country’s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a r
2021 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a ref
2022 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a ref
2023 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a ref
2024 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 amendments: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters in a ref
2025 history: previous 1970, 1979; latest drafted May 1993, approved by referendum 18 June 1993, effective 23 June 1993 amendment process: proposed by the National Assembly; passage requires at least two-thirds majority vote by the National Assembly; passage of amendments affecting the country s sovereignty, symbols and languages, the supremacy of the constitution, fundamental rights and freedoms, amendment procedures, and dissolution of the Assembly also requires approval by at least 60% of voters i