Searched for http://whc.unesco.org/?action=list&cid=171&id_search_state=11&l=en&mode=chart&soc_end=2008&soc_start=2008 
Note: This calendar view maps the number of captures of http://whc.unesco.org/?action=list&cid=171&id_search_state=11&l=en&mode=chart&soc_end=2008&soc_start=2008, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.