Role history

Hi Experts,

Can we get the full history changes for the roles TFS_PPM_ORIGINATOR and TFS_PPM_TEAM_MEMBER from backend

we are getting only the last updated by , we want to see the intermediate changes done to these roles 

I've searched Per_roles_dn other tables but couldn't get the changes , i'm only getting the last updated by

I need the all the changes done to this roles, please help

Thanks,

Manohar