https://www.thelancet.com/action/showPdf?pii=S1473-3099%2820...
Estimates are in the last column of Table 1 (page 5).
These seem roughly in line with CDC estimates for the US, see e.g. the first chart in this article from 6 days ago which compares flu mortality rates with COVID-19 per age bracket:
https://www.businessinsider.com/coronavirus-compared-seasona...
To the (many) commenters here dismissive of the paper -- because in a "foolish" way it relies on "doubtful" "suspect" "junk" "Communist" Chinese data making it "not worth the paper it's written on" (all quotes from other comments here) -- the authors specifically address "adjusting for demography and under-ascertainment". The fact that they came to results similar to US data, as long as their methodology wasn't cherry-picked, would seem to be a good sign.
And remember -- The Lancet is one of the most prestigious medical journals in the world. They're not going to publish something "junk".