In which year or years was the percent change in velocity negative?

FRED . M1 Money Stock Consumer Price Index for All Urban Consumers: All Items in U.S. City Average Real Gross Domestic Product 12.5 10.0 7.5 Percent Change 5.0 2.5 D.O 2014 2015 2016 2017 2018 Shaded areas indicate U.S. recessions Sources: BEA, BLS, Board of Governors myf.red/g/pth