SFO based.
YTD: 86% (12/14 segments)
Last 12 months: 91% (21/23 segments)
It was 100% until last week! There was one other segment (SFO-DFW) I didn't get upgraded in early 2021 or late 2020. I'm also 100% on Alaska flights, except when traveling on a companion pass (0% then).