May 4, 1970   |   Valid   |   By law   |   Pamphlet DS353 S 745 1970   |   3ACKU000940790   |  
May 28, 1978   |   Void   |   Decrees   |   Pamphlet DS357.5 D 46 1978   |   3ACKU000934777   |  
May 21, 1987   |   Void   |   Regulation   |   Pamphlet GV133.A3 R 464 1987   |   3ACKU000918341   |  
May 2, 2017   |   Valid   |   Law   |   Pamphlet LB2391.A3 L 39 2017   |   3ACKU000972728   |  
May 14, 2014   |   Valid   |   By law   |   Pamphlet DS353 C 437 2014   |   3ACKU000916345   |  
May 10, 2009   |   Valid   |   convention   |   Pamphlet DS353 C 66 2009   |   3ACKU000907641   |  
March 6, 1991   |   Void   |   Regulation   |   Pamphlet K1763 A 437 1991   |   3ACKU000938174   |