Net total tax GDP ratio

Annual data from Africa Economic Outlook, Statistical Annex, April 2014.

Net indirect tax GDP ratio

Annual data from Africa Economic Outlook, Statistical Annex, April 2014.

Net direct tax GDP ratio

Annual data from Africa Economic Outlook, Statistical Annex, April 2014.

Net trade tax GDP ratio

Annual Data from Africa Economic Outlook, Statistical Annex, April 2014.

GDP per capita

Annual data from World Bank, World Development Indicators (WDI), July 2013.

Debt stock as a percentage of Gross National Income

Annual data from World Bank, World Development Indicators (WDI), July 2013.

Share of urban population to the total population

Annual data from World Bank, World Development Indicators (WDI), July 2013.

Share of agricultural sector to GDP

Annual data from World Bank, World Development Indicators (WDI), July 2013.

Trade ratio to GDP

World Bank, World Development Indicators (WDI), July 2013.

Aid per capita

Annual data from World Bank, World Development Indicators (WDI), July 2013.

Consumer Price Index

Annual and quarterly data from IMF’s International Finance Statistics (IFS), July 2013.

Average tariff rate

Annual data from World Bank, World Development Indicators (WDI), July 2013.

Average tariff rate squared

We take the square root of the average tariff rate series.

Real effective exchange rate

Annual and quarterly data from IMF’s International Finance Statistics (IFS), July 2013.

Voice and Accountability

Worldwide Governance Indicators, 2014. www.govindicators.org

Political Stability & Absence of Violence/Terrorism

Worldwide Governance Indicators, 2014. www.govindicators.org

Government Effectiveness

Worldwide Governance Indicators, 2014. www.govindicators.org

Regulatory Quality

Worldwide Governance Indicators, 2014. www.govindicators.org

Rule of Law

From Worldwide Governance Indicators, 2014. www.govindicators.org