by 2020 it will probably be somewhere in the 5 digits.
Hard to tell exactly though.
Yeah so hard to tell exactly especially if your expectations really unrealistic and can't even support in any other means. Speculating is good but please make it to realistic. If that will happen then Im surely pissed off of what I replied to this post.
Value of bitcoin would be much higher by then, as we will see many users adopting bitcoin as a currency, and many businesses will enter into the world of bitcoins