And you still doubt BTC as a long-term investment?The graphs show the cumulative percentage growth rate over the past five years for BTC relative to the S&P 500 , Nasdaq 100 , Dow 300 , Nikkei 225 , DAX and FTSE 100 indices (top left). The remaining panels, from left to right and top to bottom, show the annual growth rate from mid-2013 to mid-2014; mid-2014 to mid-2015; mid-2016 to mid-2017; mid-2017 to mid-2018 for each of these assets.