Hans Vrolijk is Head of the Centre of Economic Information of Wageningen University and Research. He has a degree and PhD in Applied Information Systems. The Centre of Economic Information is responsible for the collection of agricultural sustainability data for the Dutch Government, Eurostat and the European Commission. He is the Dutch representative in the EU FADN committee and participates in the OECD working group on farm level analysis. He is the chairman of the yearly Pacioli workshop on innovations in farm level data collection and use. His research has a focus on the collection and use of sustainability data, data management and the evaluation of environmental and economic impacts of policy measures.