Multiple Ironman

I know there were 1,000+ first-timers at IMFL(including me).

Are there statistics out there in regards to how many IMs people finish?

For example: 1 finish 50,000 people 2 finishes 25,000 people … 50+ finishes 2 people

I am curious about the same thing for marathons, especially reading marathonguide.com where 382K marathon finishes were recorded in 2005 – 4 were mine. What is the unique number?

Please excuse if this question was already posted as I did a search and did not find anything.