A quick google search seems to contradict your statement: https://jakubmarian.com/wp-content/uploads/2014/10/number-of...
Average number of languages spoken: France: 1.8 , Germany: 2.0 , Spain: 1.7 , Portugal: 1.6 , Italy: 1.8 , Greece: 1.8 , Poland: 1.8 , Sweden: 2.5 , Finland: 2.6 , UK: 1.6