Note: This calendar view maps the number of captures of https://accounts.google.com/ServiceLogin?passive=1209600&osid=1&continue=https://plus.google.com/up/?continue%3Dhttps://plus.google.com/share?url%253Dhttp://gem-report-2017.unesco.org/en/chapter/about-the-campaign/&followup=https://plus.google.com/up/?continue%3Dhttps://plus.google.com/share?url%253Dhttp://gem-report-2017.unesco.org/en/chapter/about-the-campaign/, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.