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Historical Values
Year Value
1990 22 December 1978
1991 22 December 1978; interim constitution promulgated by National Peace-Keeping Council on 1 March 1991
1992 22 December 1978; new constitution approved 7 December 1991
1993 22 December 1978; new constitution approved 7 December 1991; amended 10 June 1992
1994 new constitution approved 7 December 1991; amended 10 June 1992
1995 new constitution approved 7 December 1991; amended 10 June 1992
1996 new constitution approved 7 December 1991; amended 10 June 1992
1997 new constitution approved 7 December 1991; amended 10 June 1992; new constitution currently being drafted with completion expected by the end of 1997
1998 new constitution signed by King PHUMIPHON on 11 October 1997
1999 new constitution signed by King PHUMIPHON on 11 October 1997
2000 new constitution signed by King PHUMIPHON on 11 October 1997
2001 new constitution signed by King PHUMIPHON on 11 October 1997
2002 new constitution signed by King PHUMIPHON on 11 October 1997
2003 new constitution signed by King PHUMIPHON on 11 October 1997
2004 new constitution signed by King PHUMIPHON on 11 October 1997
2005 new constitution signed by King PHUMIPHON on 11 October 1997
2006 constitution signed by King PHUMIPHON on 11 October 1997; abrogated on 19 September 2006 after coup; interim constitution promulgated on 1 October 2006; junta has promised new constitution by October 2007
2007 constitution signed by King PHUMIPHON (BHUMIBOL) on 24 August 2007
2008 constitution signed by King PHUMIPHON (BHUMIBOL) on 24 August 2007
2009 24 August 2007
2010 24 August 2007
2011 24 August 2007
2012 24 August 2007
2013 many previous; latest approved by referendum 19 August 2007, effective 24 August 2007 (2013)
2014 many previous; latest approved by referendum 19 August 2007, effective 24 August 2007 (2013)
2015 many previous; interim constitution released 22 July 2014 (2015)
2016 many previous; interim constitution - replacing the 2007 permanent constitution - signed by the king 22 July 2014; first draft of new constitution completed 17 April 2015, rejected by drafting committee 6 September 2015; final draft completed by new drafting committee 29 March 2016, passed by referendum 7 August 2016 (2016)
2017 many previous; draft of latest completed 29 March 2016, approved by referendum 7 August 2016, signed by the king 6 April 2017; note - the final version has several changes not reflected in the one passed by referendum (2016)
2018 history: many previous; latest completed 29 March 2016, approved by referendum 7 August 2016, signed into law by the king 6 April 2017 (2017) | amendments: proposed as a joint resolution by the Council of Ministers and the National Council for Peace and Order (the junta that has ruled Thailand since the 2014 coup) and submitted as a draft to the National Legislative Assembly; passage requires majority vote of the existing Assembly members and presentation to the monarch for assent and countersig
2019 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king 6 April 2017 | amendments: proposed as a joint resolution by the Council of Ministers and the National Council for Peace and Order (the junta that has ruled Thailand since the 2014 coup) and submitted as a draft to the National Legislative Assembly; passage requires majority vote of the existing Assembly members and presentation to the monarch for assent and count
2020 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king 6 April 2017 | amendments: proposed as a joint resolution by the Council of Ministers and the National Council for Peace and Order (the junta that has ruled Thailand since the 2014 coup) and submitted as a draft to the National Legislative Assembly; passage requires majority vote of the existing Assembly members and presentation to the monarch for assent and count
2021 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king 6 April 2017 amendments: proposed as a joint resolution by the Council of Ministers and the National Council for Peace and Order (the junta that has ruled Thailand since the 2014 coup) and submitted as a draft to the National Legislative Assembly; passage requires majority vote of the existing Assembly members and presentation to the monarch for assent and counter
2022 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king on 6 April 2017 amendments: amendments require a majority vote in a joint session of the House and Senate and further require at least one fifth of opposition House members and one third of the Senate vote in favor; a national referendum is additionally required for certain amendments; all amendments require signature by the king; Thailand's 2017 constitution was
2023 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king on 6 April 2017 amendments: amendments require a majority vote in a joint session of the House and Senate and further require at least one fifth of opposition House members and one third of the Senate vote in favor; a national referendum is additionally required for certain amendments; all amendments require signature by the king; Thailand's 2017 constitution was
2024 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king on 6 April 2017 amendments: amendments require a majority vote in a joint session of the House and Senate and further require at least one fifth of opposition House members and one third of the Senate vote in favor; a national referendum is additionally required for certain amendments; all amendments require signature by the king; Thailand's 2017 constitution was
2025 history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king on 6 April 2017 amendment process: amendments require a majority vote in a joint session of the House and Senate and further require at least one fifth of opposition House members and one third of the Senate vote in favor; a national referendum is additionally required for certain amendments; all amendments require signature by the king