When was the last time the US even produced a new tank hull? Pretty sure they haven't produced a new Abrams hull since the 80s (yes, they've been rebuilt and up

When was the last time the US even produced a new tank hull? Pretty sure they haven't produced a new Abrams hull since the 80s (yes, they've been rebuilt and upgraded a few times, but no new hulls to my knowledge). I'm not even talking about a new design, I'm talking about production of an existing design.