While this does not take into account size of respective fleets (click here for that information) the following graph shows the number of detentions recorded by Paris MOU with respect to Flag State.
About John Konrad
Captain John Konrad is the founder and CEO of gCaptain and author of the book Fire On The Horizon. John is a USCG licensed Master of Unlimited Tonnage, has sailed a variety of ships from ports around the world and is a distinguished alumnus of SUNY Maritime College.