What happened in 2013 also happened in 2017. It's an interval of 4 years. The same is expected to happen in 2021. It's the after effect of Bitcoin halving. From record, Bitcoin soars out of reach a year after every halving.
Well, fingers crossed, eh.
These are officially weird times so anything could happen. The signs are there for some explosive action in the next couple of years but it requires enough flush people to follow through and make it a reality.
You can't plan your future around an event that's only happened twice so far. Third time lucky maybe.