Sec. 50. "Livestock transaction", for purposes of IC 15-17-15, means the following:
(1) For market agencies selling livestock on commission, the dollar value of livestock sold on commission.
(2) For market agencies buying on commission and dealers buying livestock, the dollar value of livestock purchased.
(3) For market agencies acting as a clearing agency, the dollar value of livestock purchased by all persons for whom the market agency served as a clearer.