Few times per year.
How often do you try to explain to someone what "how often" actually means and that "often," "occasionally," "sometimes," or "not often" are not answers to such a question, because they're not described rates of frequency—causing you to think people have a reading comprehension deficit or just don't give a fuck, that's why the world is so full of retarded problems when it comes to responsibility, accountability and other important self-awareness factors?