Angus Maddison was a world scholar on quantitative macroeconomic
history, including the measurement and analysis of economic growth and
development. He was professor at the University of Groningen from 1978
to 1997, and a founder of the Groningen Growth and Development Center.
Professor Maddison compiled one of the most comprehensive global
datasets for Population, GDP, and per capita GDP, covering 180+
countries and regional groups and going back all the way to AD1. For further information on these statistics, see