Did Def Leppard have no 1 hits in the US in the 80s?

Def Leppard had two #1s, both were in the 80's and in 1988 back-to-back--Pour Some Sugar On Me and Love Bites. On the rock chart, def's 80's #1's were Photograph, Rock Of Ages, Love Bites, and in the 90's Let's Get Rocked and Stand Up Kick Love Into Motion.