Well, just to sample one portion of the community, from the top 37 riders in the FWT
13 from Usa 1 skier to 24million people
2 From Canada 1skier to 17.5million people
North America Total 1skier to 23.6million people
Now from Europe
5 From France including the FWT Champion 1 skier to 13.2million people
4 From Switzerland 1 skier to 2million people
2 From Sweden 1skier to 4.75million people
3 From Austria 1 skier 2.8million people
2 From Italy 1 skier to 30million people
1 From Russia 1 skier to 143million people
1 From Germany  1 skier to 80 million people
 Europe Total
1 skier to 13million people if you don't count russia
1 skier to 20million people if you do
So from a 1 year sample of the FWT europe wins and switzerland really kills it with austria a close second.
If you count countries that push out the most by numbers then Usa wins by a landslide. really take it as you will