There were some long gaps in the 70s because N. Ireland used to play their home games at Hampden during the Troubles.
Over a year once - Sep 75 v Denmark until Oct 76 v Czechoslovakia.
Tony Stokes lambastes Connolly for diving, then admits he does it himself!
http://m.stv.tv/sport/football/clubs/celtic/313460-anthony-stokes-how-connolly-wasnt-punished-for-diving-is-beyond-me/
Whatever you think about Nicola Sturgeon you can't dispute that's a stunning portrait....
http://news.stv.tv/east-central/313291-nicola-sturgeon-unveils-new-gerard-m-burns-portrait-for-scotland-week/