What proportion of current female academics advanced their careers by marrying their professors?

What proportion of current female academics advanced their careers by marrying their professors? For example, former Harvard president, Doctor Faust, turbocharged her career when young by trading in her med student first husband for chairman of her department at Penn. https://t.co/t7j21A41gG

— Steve Sailer (@Steve_Sailer) January 11, 2019