Indeed , in various municipalities in actual Croatia and Slovenia , census data shows that there are still significant numbers of Italians living in Istria , such as 51 % of the population of GroÅ 3\/4 njan\/Grisignana , 37 % at Brtonigla\/Verteneglio and nearly 30 % in Buje\/Buie . Anyway , in various municipalities in actual Croatia and Slovenia , census data shows that there are still significant numbers of Italians living in Istria , such as 51 % of the population of GroÅ 3\/4 njan\/Grisignana , 37 % at Brtonigla\/Verteneglio and nearly 30 % in Buje\/Buie .