Only time I ever saw GAF scores was upon hospital admission, and they were usually pretty low -- around 20-25. Most of the time when I was still a bit symptomatic but able to live day to day, I probably sat around 70-75. I sit near 100 most of the time now.
Here's the chart for those that have never seen it before:
http://www.albany.edu/counseling_center/docs/GAF.pdf
or this more detailed chart:
https://www.omh.ny.gov/omhweb/childs...unctioning.pdf