History: L. 1939, ch. 241, § 4; L. 1961, ch. 288, § 2; L. 1970, ch. 255, § 3; L. 1976, ch. 272, § 1; L. 1980, ch. 190, § 2; Repealed, L. 1981, ch. 248, § 9; July 1.