Started attending with the first one and have not missed very many. However, this is more than likely the last we will be attending because of the effort required to make the trip, etc. gets more difficult each year. My wife especially has difficulty with the lengthy car ride and overnight stay. The race is often so lengthy we don't get much use out of our motel room.
Hope to see some fellow IOWers at the track and see some great open-wheel action as well.