[CatHerd]

Thanks for posting those maps. Here is another that is relevant. Median age:

[daniel1212]

Thanks. Added to the collection. But I did not know .svg files would post as images here. Flicker would not take the link, so I got the https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Median_age_by_country%2C_2016.svg/640px-Median_age_by_country%2C_2016.svg.png file from https://en.wikipedia.org/wiki/File:Median_age_by_country,_2016.svg