Searched for http://www.unesco.org/new/es/culture/themes/dynamic-content-single-view/news/la_semana_del_jazz_llega_a_las_escuelas_cubanas/
Note: This calendar view maps the number of captures of http://www.unesco.org/new/es/culture/themes/dynamic-content-single-view/news/la_semana_del_jazz_llega_a_las_escuelas_cubanas/, not how many times the site was actually updated.
Look Up URL in general Internet Archive web collection.