Interest rates fell three times in 2019 as the Reserve Bank of Australia (RBA) tried to kick-start an already sluggish Australian economy that was in the midst of a housing downturn, with residential construction tumbling after a record building boom. In March 2020, the RBA again cut the official cash rate down to 0.25 percent to counter the economic downturn caused by the coronavirus pandemic. Discuss the effectiveness of RBA's monetary policy in 2020.