Which version do I need to open SX2 files on retina mac os 10.8.5?

Hi there
Been out of it for quite a while and am looking to see if I can acquire a newer (but not neccesarily latest) version of cubase to open ancient files made in SX2. I am using a retina mac (64bit?) mid 2012 with mac os 10.8.5 Does anybody know which version of Cubase would work on that system and would it open the old project files made in sx2? Otherwise I would have to go the other way and get an old mac to run sx2 which I still have, dongle and all… Any advice very welcome. Best wishes