Highest inflation rate by country in 2019. The highest inflation rate in 2019 was reported in Venezuela, followed by Zimbabwe, South Sudan, Sudan, Argentina, Liberia, Iran and Ethiopia, Haiti and Angola. The lowest inflation rate in 2019 was reported by Libya, Burkina Faso, Chad, Mali, Niger, United Arab Emirates, Iraq, Fiji and Qatar. Investors are likely to hear the terms inflation and gross domestic Economic Indicators To Know and What is GDP and why is it publicly displayed targets for the annual rate of inflation. more.