The Historical Public Debt Database contains unbalanced panel data on Gross Domestic Product Gross Government Debt and Gross Government Debt-to-GDP Ratio for 187 countries. The series spans the years 1800 through 2015 although each country’s data depends on its date of independence and data availability. The database was constructed by bringing together a number of other datasets and information from original sources. For the most recent years the data are linked to the IMF World Economic Outlook (WEO) database to facilitate regular updates.