Another way of putting it is that people achieve their goals and wind down the usage of the drug that got them there. I think that in a few more years the numb

Another way of putting it is that people achieve their goals and wind down the usage of the drug that got them there. I think that in a few more years the number may stay at 25% (or whatever) but that the makeup of the 25% may be different. That is, people will go off it and back on it if they see their progress reverse but that will happen to different people at different times.