Regional Gross Domestic Product Per Capita (GDP) GDP represents the regional GDP per capita measured as a proportion of the overall Spanish average of 100, adjusted annually. The regional GDP scores (along with the updated Spanish average of 100) were available for each of the 17 regions for 1973, 1985, 1989, 1991, and 1993. Missing years between 1977 and 1996 were given scores via interpolatio...