I think it is the first time since I started play in Spain that we made more international points than Brazil. Unfortunally today all youths are almost the same.

How many teams count for the ranking?
All or has a specific number?

All teams playing an international competition during the season.

Congrats to Spain! France did it awhile back also. With the rising of Tigres and Chacaritas in Argentina to rival Brazilian teams, I can see Spain gaining further ground in the ranking.
Meanwhile England will jump up two place next season, from 9th to 7th in the world, and from 6th to 5th in Europe, surpassing Italy. The aim would be the 3d European spot for that extra CL spot