Sort:  

Months and perhaps even years IMO. I think the tech is on the verge of much bigger adoption.

Its starting to get more and more recognition on mainstream media aswell. More and more people starting to look into this overall.
Just look at Coinbase that added 400 000 users the last (month?)

Wow, I was unaware of that one. That's an impressive growth rate.

This was all I could find but :

alistairmilne Alistair Milne tweeted @ 10 May 2017 - 16:30 UTC

Coinbase has added ~400,000 users in the past 30 days: coinbase.com/about

Disclaimer: I am just a bot trying to be helpful.