I've no idea what my average is. Been with my woman 14 years now and we have 3 kids. In my house it's more like... there can be weeks or even a whole month where we don't get to have sex due to stress, being busy, it being the wrong time of month, the baby not sleeping well etc... but, then in other periods, the distractions will be gone and we will have sex every other day for a couple of weeks in a row.
Like the article says, the average number isn't that important. The important thing is that you are both generally happy with your sex life.