hiking rates cut interest rates to zero Effective Federal Funds Rate https://fred.stlouisfed.org/series/DFF Effective Federal Funds Rate Andy Kiersz/Business Insider; Data via FRED Business Insider/Andy Kiersz, data from FRED https://fred.stlouisfed.org/series/DFF hiking rates https://fred.stlouisfed.org/series/DFF Effective Federal Funds Rate Effective Federal Funds Rate cut interest rates to zero Effective Federal Funds Rate hiking rates Effective Federal Funds Rate https://fred.stlouisfed.org/series/DFF from 20% to zero Effective Federal Funds Rate Effective Federal Funds Rate https://fred.stlouisfed.org/series/DFF Business Insider/Andy Kiersz, data from FRED DFF Effective Federal Funds Rate cut interest rates to zero