I don't think bitcoin will be $40000/bitcoin more than it, in my speculation bitcoin will be hit around $50000/bitcoin because right now many users of bitcoin, they are starting to addoption bitcoin as digital asset or digital comodity and one year is enough time for bitcoin to be $50000 and in 2018 where is bitcoin will be having block, the number of bitcoin be mined will reduced it will makes supply of bitcoin be more little and the price of the bitcoin will increase.