Has anyone seen statistics on severe illness from COVID-19 by age group?

EXAMPLE (these are NOT real statistics): What I mean is something like people ages 20–40 if1000 are infected 3 people get severe illness needing some sort of hospitalization, ages 40–60 6 out of 1000, if above the ages of 60 200 in 1000 have severe illness. THESE STATS ARE COMPLETELY MADE UP, but that’s the type of thing I’m looking for.

I would think Korea or China must have stats that tell us this. Maybe you can help me google.