Pumped it out last year. I have it inspected and pumped out every 3 years or so.
It doesn't see a lot of use, I'm only home about 1/2 the time anyway.
I did get a hold of the septic guy - he told me to pop the cover and see how high the water was, if it up to the top of the cap, call him back otherwise something else is plugged up.
So I popped the cover, those guys must be superhuman - that thing weighed a F'in ton, water was right where it was supposed to be.