it is the market forces that will determine what will happen to the price of steem on the market,if the market forces are going along with sellers then it means the demand of the steem will be low and that would make steem price to go lower but when the market forces flows with the buyers then it means the demands of the steem will rise and that would make the steem price to go higher,so yes steem price can reach 100$ before end of the year if the market forces hugely increases demand of steem on the cryptocurrency market..