References/Notes/Attributions:
Source
http://www.ams.org/employment/surveyreports.html
Supplementary Table 4 in the 2008-09 data.
See http://www.ams.org/profession/data/annual-survey/docsgrtd for more recent data.
References
Fox, J. and Weisberg, S. (2019) An R Companion to Applied Regression, Third Edition, Sage.
Phipps, Polly, Maxwell, James W. and Rose, Colleen (2009), 2009 Annual Survey of the Mathematical Sciences, 57, 250–259, Supplementary Table 4, orginally downloaded from http://www.ams.org/employment/2009Survey-First-Report-Supp-Table4.pdf