When will steemit hit 1 million users?

I just saw that steemit has 200k accounts on it now, steemit has grown from 146,881 accounts to 200K in just 2 months.
of course steemit is still 800k away, but I think that if we keep inviting users it will maybe happen before 2018, what do you guys think? will steemit hit 1 million users before 2018, or even faster? or maybe in 2019? let me know what you think!
I personally think steemit is gone have 1 million users before 2018