Searched for https://atom.archives.unesco.org/informationobject/browse?sort=identifier&topLod=0&actorId=561&eventTypeId=111 
Note: This calendar view maps the number of captures of https://atom.archives.unesco.org/informationobject/browse?sort=identifier&topLod=0&actorId=561&eventTypeId=111, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.