In computing the number of convictions, all convictions must result from offenses occurring subsequent to June 8, 1972, except that convictions for offenses designated in § 2802(1)j. and k. of this title shall only be computed if the offenses giving rise thereto occur subsequent to July 1, 1977.

21 Del. C. 1953, § 2813; 58 Del. Laws, c. 416; 61 Del. Laws, c. 285, § 2.;