[roxya]

I can't access the source of these statistics without registering but:

https://www.statista.com/statistics/289140/tumble-dryers-in-...

Shows that only a little over half even have dryers. One look around from my back garden tells me that this is fairly accurate (if anything, I would say more than 50% of my neighbours dry on a line outside)

[SmellyGeekBoy]

Dryer ownership doesn't tell the whole story either... We use ours a handful of times every year, when we need to wash and dry something in a hurry. I imagine plenty of others go unused most of the time as well.