Eurobarometer is a series of surveys that have been regularly performed since 1973 on behalf of the European Commission, the executive body of the European Union (EU). Posing a range of questions, it examines public opinion on issues relating to the EU across its member states and investigates topics such as the environment, technology, and health. A Flash Eurobarometer consists of telephone interviews that yield results more quickly. How often is the Standard Eurobarometer survey conducted? Discuss