Thread:Support/Get really "unreviewed" messages only

Hi, when proofreading messages and selecting the "Unreviewed" filter I am presented with many messages that have already been reviewed by one or more people. Looking at the URL I get when clicking that filter (https://translatewiki.net/w/i.php?title=Special:Translate&group=mediawiki&action=proofread&filter=translated|!reviewer%3A1314|!last-translator%3A1314&setlang=en&language=de) it seems that the software's notion of "unreviewed" is "all messages that the current user has not reviewed or created/edited". So this means to clear the backlog I need to review ~18k messages for the MediaWiki namespace only, not to mention the other projects. The idea of translatewiki is that the effort is distributed among several people, i.e. I do not want to do the work that someone else has already done and review stuff that has already been reviewed by many people. Is there some way I can view the really unreviewed messages, i.e. the messages that have not been reviewed or maybe not by more than 1 or 2 people? Thanks and regards,