I average about once per month, sometimes more frequently, sometimes less - but that is just an average.
If I had the time/money I would probably go 1-2 times a week. Hoping to remedy that by buying a rimfire, and even if I only shoot it, at least I can make it to the range more frequently than my other guns. Eventually when I get my own reloading equipment I will shoot a lot more as well, but I don't have room for it at my current household so I have to go to my dads to reload at the moment.