(a) The board shall set as a goal the improvement of its disciplinary system by January 1, 1992, so that an average of no more than six months will elapse from the receipt of complaint to the completion of an investigation.
(b) Notwithstanding subdivision (a), the goal for cases which, in the opinion of the board, involve complex medical or fraud issues or complex business or financial arrangements should be no more than one year to investigate.