Last year, after an incredible climb in 2017, the price of Bitcoin against the USD fell by more than 3/4 of its highest price. It probably scared many of the investors hoping for a quick win. After hitting a low-point in December, it started a slow climb. On April 2nd the price jumped 15 percent. Since then it has been mostly up. Yesterday the price reached 8,713 USD, which, from its low point on December 15th, makes a 170 percent rush.
An interesting thing, I think, is that the trading volumes are higher now than when the price peaked in 2017.