Spain
approved by legislature 31 October 1978; passed by referendum
6 December 1978; signed by the king 27 December 1978
Sri Lanka
adopted 16 August 1978, certified 31 August 1978; amended
20 December 2000
Sudan
Interim National Constitution ratified 5 July 2005
note: under the Comprehensive Peace Agreement, the Interim National
Constitution was ratified 5 July 2005; Constitution of Southern
Sudan was signed December 2005
Suriname
ratified 30 September 1987; effective 30 October 1987
Swaziland
signed by the King in July 2005 went into effect on 8
February 2006
Sweden
1 January 1975
Switzerland
revision of Constitution of 1874 approved by the Federal
Parliament 18 December 1998, adopted by referendum 18 April 1999,
officially entered into force 1 January 2000
Syria
13 March 1973
Taiwan
adopted on 25 December 1946; effective 25 December 1947;
amended in 1991, 1992, 1994, 1997, 1999, 2000, 2005
Tajikistan
6 November 1994