How many people out of the original number entering as a physics or physics/math undergrad (overall, not at any specific university) will: 1. Get their B.Sc.? 2. Get their Ph.D.? 3. Become a PostDoc, or stay in the academic stream in some way? 4. Become a professor? 5. Become a tenure stream professor? In other words, what are the chances of reaching each stage? Feel free to add more stages if you feel they are appropriate.