<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Supply - side economics is a macroeconomic theory arguing that economic growth can be most effectively created by lowering taxes and decreasing regulation . According to supply - side economics, consumers will then benefit from a greater supply of goods and services at lower prices and employment will increase . It was started by economist Robert Mundell during the Ronald Reagan administration . </P> <P> The Laffer curve is one of the main theoretical constructs of supply - side economics, the idea that lower tax rates when tax level is too high will actually boost government revenue because of higher economic growth . </P>

When did supply side economic policies begin to grow in popularity