Many years before I was born, but I'd assume the 50s were worse given we spent a few years in the 2nd division.
That being said, this is at least on par with the 90s - but even in that period we had the Royle 18 months or so in the middle of it where we won a trophy and finished top 6.
In the last decade we have been basically on the decline slowly but surely the entire time, to the point that for the last 3 years we've had a team playing the worst football in the division and playing footsy with relegation. It's grim. I get practically no enjoyment from Everton currently and I haven't for a good while. Yes, I can be objective about the reasons why but that changes very little about how I feel.
I've got two lads, 13 and 16, and I feel sorry for both of them. They're growing up as blues in one of the worst periods we've ever had.
Ok, there's light possibly at the end of the tunnel, but no fanbase has suffered like ours in the top division. I often think that it might have been better if we'd gone down and come back up, mentally that might have been like ripping the plaster off, but no blue could ever *want* that to happen, so instead we suffer.