From Wikipedia: In 2011, Norway was the eighth largest crude oil exporter in the world (at 78Mt), and the 9th largest exporter of refined oil (at 86Mt). It was also the world’s third largest natural gas exporter (at 99bcm), having significant gas reserves in the North Sea
Norway also exports electric from their hydroelectric plants.
All of this from a country of less then 6 million people.
That is near the same population of Puerto Ricans in the world. But somehow, you don’t see Puerto Rico with that kind of wealth.
So I wonder what could be the difference?