That would be 1977, missing Some Girls, Tattoo You, and everything after. They kept writing and recording. But in recent decades, very little they wrote found its way to radio. Is it because they were mailing it in? I doubt it; I've observed the same phenomenon with Rush and other long-established bands. At some point, someone in programming decides to close the canon of that band's songs, as if "that's all she wrote." Of course, digital and streaming could have changed this, but I'm not sure it has.
In 1981 I saw the Stones perform, and if you were at the show I saw, and you said that Mick mailed in his vocals, I could not disagree. I was terribly disappointed. Sure, he hopped around the stage and preened for the audience, but I don't think he would have carried a tune that night if he was outfitted with a Kelty Tioga.