I found some information via the National Institutes of Health that may be of interest to some of you (especially if you want to know how may people in your field have tenured jobs, or how the average individual holds a post doc, comparable salaries, etc.). If you click on the link below and then scroll down to the heading "Data on Postdoctoral Experiences - Slides by Eleanor Babco, Ph.D., Commission on Professionals in Science and Technology - 2003 (PowerPoint)" you can view a PowerPoint slide show with several data slides showing trends among different disciplines over time.
http://grants.nih.gov/training/outcomes.htmA few things that stood out for me:
1. If you add up the PhD’s given out in Math, Engineering, and Physical/Geosciences in 2001 that are about equal to those given out in the Social Sciences and Psychology (I bet this would not surprise most people).
2. The median salary 1-3 years after a degree seems to be higher for people who did not get a postdoc than for those that did. Don't know what this means. It may reflect people who went into industry or higher paying non-academic jobs for which a postdoc was not a necessity.
3. There seems to be slightly more people in tenure track jobs compared to those who are tenured in the Biomedical fields (1:3) than in the Social/Behavioral sciences (1:4). I interpret this to mean that the population of faculty in the latter field are probably older than the former.
Enjoy!