Not as often as some. The last time I had sex was the last day of March, if I remember correctly. I've only had 3 sex partners in the past year and I don't plan on having anymore until I begin dating somebody.
Anyway, **** waiting for marriage. I want to love a person completely (including sexually) before I will commit to marriage. What happens if you wait and wait, marry the person, and they have a micro-****?
Of course, sex isn't EVERYTHING, but it is still important.