2016 -2017 , btc pump very very very much. Guys, you can see btc chart follow this link:
https://www.buybitcoinworldwide.com/price/First: Dec 4, 2013 , btc reach more than 1.1k$ per btc and than down for a long long time. Until Jan 4, 2017, BTC reach 1.1k$ per btc again.
Second: Economic Crisis will appear after per 10 years. 2008, it happen, and now 2018.
Third: Almost countrys on around the world are ban crypto to promulgation of the law for management crypto and blockchain
So 2018, market will down and sideway at low price. 2019 or futher, btc will comeback and crypto will pump strongly