Industry Classification System (NAICS) code. (D) The percentage of population census tracts designated as qualified opportunity zones that have received qualified opportunity fund investments. (E) For each population census tract designated as a qualified opportunity zone, the approximate average monthly number of full-time equivalent employees of the qualified opportunity zone businesses in such qualified opportunity zone for the preceding 12-month period (within numerical ranges identified by the Secretary) or such other indication of the employment impact of such qualified opportunity fund businesses as determined appropriate by the Secretary. (F) The percentage of the total amount of investments made by qualified opportunity funds in— (i) qualified opportunity zone property which is real property