How much money do commodity traders make?

Commodity BROKERS make money on commissions. Commodity Traders make money on buying low selling high or selling high and buying low. A lot of Commodity traders, from what I know, wil work for a trading company or institution who already has cash and all they do is simply trade it to make a profit. Also Commodity traders belong to hedge funds who have money from individual investors. Then I would say the smallest percentage use there own money to trade with