Since 89 you've had how many years in the premier league? You'll know as you no doubt had a rest from it each time you were relegated, line the other 10,000.
I've gone every year since 1973.
I would hazard that he is a premier supporter. Palace are probably his second team, after Spurs most likely. He's one of the 10,000 who don't go when palace are out of the top division.