Killian's is a trademark under which two red beers are produced and sold: a 6.5% abv ale brewed in France by Heineken France, and a 5.4% abv lager brewed in the USA by MillerCoors under license of the former. Despite the differences in the brewing methods, the marketing of both beers claim legacy to an Irish "original recipe".

Can we draw the following conclusion?
Irish people are the biggest consumers of Killian's red beer
It's impossible to say