[Koha] how many biblio was modified by each staff

Hi, Is there any way to find out how many biblio was modified by each staff of our library? We want to get a reports showing to us the biblio and date to each employee separately. Mr Bernardo Help me and find something on http://wiki.koha-community.org/wiki/SQL_Reports_Library#Titles_added_by_cata... we need to know how many record was edited by each user. Many thanks Hussain A.