At the moment around 64 ish, much higher than it was this time last week as we're now able to look up rather than down - if you are in the top half, you can't be relegated but you can qualify for Europe.
90s is only achieved when we win a trophy.... fitting because that's the decade it was when we last did.
But I wasn't into football then, so in my living memory, the highest and lowest would be about
1, which was after the first Bucharest game in 2005... I'd just about seen enough TBH and I was literally in tears.
Only been in single figures another couple of times - I'd say after the FA Cup game against Wigan (no tears!), and everything between December and March last year - especially the Hull and Stoke away games (again no tears, just festering rage).
I was actually flabbergasted the morning after that Stoke game to find that Martinez was still our manager!
As for the highest, obviously getting top four after a 2-0 win against Newcastle (which I went to) was excellent - 85 I'd say, as that was the year of our best ever season. But only better than that was the AJ derby (also went), which would be around 89.