Here* is a link to a quantitative assessment of milk consumption around the world.

There is even a handy map.

Interestingly, they note that milk consumption is higher amongst older people. Possibly due to the crazy amount of milk propaganda historically.

I know this isn't directly related to your comment, but it was getting heated so I wanted to derail that.

* https://milkgenomics.org/article/milk-consumption-around-the...