Don't know the answer to your question but just because a handful of 380+ bulls are shot doesn't mean that overall size of all bulls harvested is going up or even staying the same. Yes, with Utah's system there will always be some monster bulls shot each year.
To get an accurate reading though, you would have to get the score of every bull harvested, days afield, number of spotters per hunter, time spent hunting vs driving roads, success percentage, accurate number of elk in each unit and on and on. After you got a system to get all that info, you would then have to collect it over a number of years to determine a pattern...
In other words, not going to happen. It is all based on personnel opinion unless the elk herd crashes or climbs drastically to see an obvious change.
Mntman
"Hunting is where you prove yourself"
Let me guess, you drive a 1 ton with oak trees for smoke stacks, 12" lift kit and 40" tires to pull a single place lawn mower trailer?