Here is an interesting paper that answers the question. Some highlights from Table three close the superlative 0.1 percent:
- 18 per centum are fiscal professionals.
- 42 percent are executives, managers, or supervisors inwards nonfinancial businesses. More than one-half of those are inwards closely-held (presumably often small) businesses.
- 7 percent are lawyers.
- 6 percent are inwards medicine.
- 3 per centum are inwards arts, media, or sports.
- Less than i per centum are professors or scientists. :(
