Here in Ireland, 87% of the population are monolingual Hiberno-English speakers. There's a little over 600,000 bilingual people in Ireland and 26% of these people speak the Irish language. The rest is majority German, Spanish or French (we study them in school) and some speak other languages. But majority of the country is monolingual. I know Ireland is probably a bit of a unique case but I'm curious to see is monolingualism common in other countries.