From here, all the decades look the same
Warbling '70s pop sensation Kate Bush
'70s? Yes, The Kick Inside was released in 1978, and had Kate's first two number-1 hits ("Wuthering Heights" and "The Man with the Child in His Eyes". But she had three number-1s in the '80s, and her last one was in 2005. The '80s were her most productive decade, with four albums. Her only previous tour was in '79, but that's on the cusp of the '80s. If she's associated with a decade, I think the 1980s would have to be it.
That said, I'm glad to see she's still out there and clearly still has a big fan base. I don't pay much attention to music these days, but I remember celebrating Katemas (30 July), in a small way, with a couple of co-workers circa 1990.