Since 1973, the European Commission has conducted Eurobarometer surveys to monitor the evolution of public opinion in European Union (EU) Member States. The surveys cover a varying range of major topics of interest to citizens including EU enlargement, poverty and social exclusion, health, culture, information technology, the environment, the euro, defense and climate change.
Each survey is based on approximately 1 000 face-to-face interviews per Member State, except for Germany (2 000) and Luxembourg (600). Reports are published twice yearly.