I'd have to think about that for a while. There have been a fair number but I've always preferred to stick with a job if it was going well. So 26 years on one job, 8 on another, several more upwards of 2 or 3 years, and the rest were short term.
I did take a job with our taxation department in 1989. Dreadful place to work. I lasted 4 months and 19 days, and I was counting.