Madonna did not have a number 1 album in the US during the 1990s. She had several albums that peaked at number 2 (The Immaculate Collection, I am Breathless, Erotica, Evita and Ray of Light), but her next number 1 album after Like a Prayer in 1989 was 2000's Music.

As for the people commenting on Madonna's age, or rant that Madonna should "act her age", remember this moment when your Taylors, Sabrinas, Beyoncés and Rihannas are in their 60s and performing without anyone bitching about their age. Madonna opened that door and took every hit that came with it, so the rest of them can walk through without fear. She's been doing this since 1983 and every female pop star today is following Madonna's blueprint.
You're welcome.