[Acts 1967, ch. 335, § 17; 1976, ch. 824, § 7; 1978, ch. 569, §§ 6, 7; T.C.A., § 62-1917; Acts 1983, ch. 250, § 14; 1987, ch. 62, § 2; 1997, ch. 62, §§ 1, 2; 1999, ch. 358, § 8.]