Searched for https://hivhealthclearinghouse.unesco.org/library/documents/reviewing-your-drug-and-alcohol-policy-toolkit-schools 
Note: This calendar view maps the number of captures of https://hivhealthclearinghouse.unesco.org/library/documents/reviewing-your-drug-and-alcohol-policy-toolkit-schools, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.