@inspectora - I don't know the percentage and everything, all I can say is that Denmark has been leading the world happiness ranking for years, never under 2nd place. All scandinavian countries are within the top 5 or 6, whereas the USA are in the 18-20 arera. So apparently, low(er) taxes and more guns do not make people overwhelmingly happy.
https://s3.amazonaws.com/happiness-report/2019/WHR19.pdf
https://s3.amazonaws.com/happiness-report/2019/WHR19.pdf