Well in Austria the current standard is triple pane windows (my parents house form the 70ies had double pane windows).

I don't know the current percentage, but passive houses (https://en.wikipedia.org/wiki/Passive_house) are getting more and more in this area.

Not beeing in the construction business I can't give you any details how the way we insulate our houses compares to your information. Most of the houses here are built with concrete and bricks, so they're insulated differently (styrofoam, as much as I know).