How can I list all users by sync taks?

Hi
The client wants know when a user was added into RTC. But the following URL only display two users added last night. How can I list all users?
Thanks
Jirong
https://localhost:9443/jts/events?provider=ldapnightlysync&changeType=Imported&&since=2011-7-06T21:16:36Z&maxResults=100
Users imported by LDAP nightly sync task since 7/6/11 5:16 PM
User "JakuciLi" importedTuesday, January 10, 2012 1:00 AMNew user with user id "JakuciLi" and name "Jakucionis, Linas (CSS)" imported.
User "kabiawjo" importedWednesday, January 11, 2012 1:00 AMNew user with user id "kabiawjo" and name "Kabiawu, Joachim (CSS)" imported.
The client wants know when a user was added into RTC. But the following URL only display two users added last night. How can I list all users?
Thanks
Jirong
https://localhost:9443/jts/events?provider=ldapnightlysync&changeType=Imported&&since=2011-7-06T21:16:36Z&maxResults=100
User "JakuciLi" importedTuesday, January 10, 2012 1:00 AMNew user with user id "JakuciLi" and name "Jakucionis, Linas (CSS)" imported.
User "kabiawjo" importedWednesday, January 11, 2012 1:00 AMNew user with user id "kabiawjo" and name "Kabiawu, Joachim (CSS)" imported.