Source can be downloaded from the EU website: https://europa.eu/eurobarometer/api/deliverable/download/file?deliverableId=97983
It’s linked to on this page (near the bottom in the “infographics” section): https://europa.eu/eurobarometer/surveys/detail/3492
22% is awfully close to the 20% you can expect to answer a survey “wrong” to spite the person with the temerity to survey them