The German Socio-Economic Panel is a longitudinal panel dataset of the population in Germany. It is a household based study which started in 1984 and which reinterviews adult household members annually. Additional samples have been taken from time to time. In 2015, there will be about 14,000 households, and more than 30,000 adult persons sampled. Some of the many topics surveyed include household composition, occupation, employment, earnings, health and life satisfaction. The annual surveys are conducted by the German Institute for Economic Research and the Kantar Group. The survey is funded by the German Federal Government and the State of Berlin via the «Bund-Länder-Kommission» for Educational Planning and Research Promotion.