Thanks, I didn't know there was an explicit term for this (though I should have guessed). It is a pity though that the map that they use to illustrate the data

Thanks, I didn't know there was an explicit term for this (though I should have guessed). It is a pity though that the map that they use to illustrate the data is divided into administrative divisions that are not really comparable: England, Wales and Scotland for Great Britain, but all 17 autonomous communities for Spain.