Diagram to show what proportion of people in each counting area voted yes in the 1975 referendum on the UK’s continued membership in the EEC.
Office for National Statistics; National Records of Scotland; Northern Ireland Statistics and Research Agency
OGL 3
Synthesised from data on <a rel="nofollow" class="external text" href="https://www.opendatani.gov.uk">opendatani.gov.uk</a>, <a rel="nofollow" class="external text" href="https://casweb.ukdataservice.ac.uk">casweb.ukdataservice.ac.uk</a>, and already on Wikipedia.