The Irish figure seems a bit extreme to me, but the American one does not.
One of the major consequences of Prohibition was to effect a conversion
from public from private drinking. In that respect, at least, it was a
success. The dominance of home consumption used to be peculiar to US
drinking culture (although, if figures exist, and I am not sure that they
do, one might find that behaviour has long been comparable in Russia, where
public drinking places are rare) but many other Western countries are now
moving in an American direction. Here in Britain consumption used to be
three-quarters in pubs and one-quarter at home but I think it is now more
like two-thirds and one-third. Obviously the international clamp-down on
drink-driving has restricted an increased proportion of drinking to the
home. There is an interesting discussion on the social sterility of a
culture where most drinking takes place in the home in Ray Oldenburg's book
"The Great Good Place".