Had one last year. And darnit, I have to wait for 12 years for the next one.
My wife on the other hand has had 3 in the last 6 years. She has all the luck.
Word of advice, follow the directions for the nighr before. Being clean as a whistle drastically improves the reading and keeps the doc in good humor. A friend couldn't handle the drink they make you ingest and blew it off. They sent him home.