The World Bank study reports aggregate and individual governance indicators for 213 economies, 1996-2012,
for six dimensions of governance: Voice and Accountability; Political Stability and Absence of Violence; Government Effectiveness;
Regulatory Quality; Rule of Law; Control of Corruption. Full datasets available to download in Excel and STATA.
"The Polity IV dataset covers all major, independent states in the global system ... over the period 1800-2018...[and] constantly monitors regime changes in all major countries and provides annual assessments of regime authority characteristics and regime changes and data updates."
Cross-national statistical data and risk assessment reports on domestic armed conflict, governance and political instability, militarization, religious and ethnic diversity, demographic stress, economic performance, human development, environmental stress, and international linkages. Covers 196 countries, 1985-2000. Downloadable to CSV format.