Bitcoin value 2017-04-01 1,085.03 ++++++ Bitcoin value 2018-04-01 $6735.53
1.South Korea threatens to shut down cryptocurrency exchanges - December 28, 2017 [Bitcoin value:16064.44$ 10 days 17163.38$] [1]
2.SegWit2X Cancelled - November 8, 2017[Bitcoin value:7143.47$ 10 days 7844.44$][2]
3.China Is Shutting Down All Bitcoin and Cryptocurrency Exchanges - September 15, 2017[Bitcoin value:3606.08$ 10 days 3714.44$][3]
4.China bans companies from raising money through ICOs - September 3, 2017[Bitcoin value:4668.05$ 10 days 4223.82$][4]
and more
Source:
#1#2#3#4 https://99bitcoins.com/price-chart-history/