The theoretical and practical framework of the Sustainable national income is developed by the economist Roefie Hueting. Already in 1970 he published a collection of articles over the years 1967-1970 titled: “What is nature worth to us?” . His 1974 Ph.D. thesis was entitled “New scarcity and economic growth: More welfare through less production?” In 1969 Hueting founded the Department of Environmental Statistics at Statistics Netherlands. A multidisciplinary team of biologists, chemists, physicists, electrical engineers and economists worked for nearly forty years on the SNI and the environmental statistics on what it is based.