How often do you run your dishwasher?

I just saw a post on the frugal sub about handwashing vs dishwater. The question was about which would be more frugal since the op did not pay for water but electric. And so the discussion went in many directions. Now I’m asking those of us who live alone and have a dishwasher how often do you run yours? I find I have a hard time filling my dishwasher. I use cups more than anything else. 9 cups does not make a full load. At best I run it once a week.