Bitcoin has been able to increase itself from the beginning.But it does taken loss for some time ,such as - February 2014,August 2016,March 2012,June 2011,September 2012,January 2015,December 2015,7th may 2019.Even though I see Bitcoin as a market, then profit and loss common. But Bitcoin has a loss for a temporary time and has profited more. For which the price of Bitcoin is increasing so much every year. !!!!!!!!!