FIGURE 3-7 Doctorates awarded by US institutions, by field and citizenship status, 1985-2003. US citizens and permanent residents earn about 62% of the doctorates in all fields of science and engineering (S&E), about 60% in the physical sciences, and 41% of those awarded in engineering and the combined fields of mathematics and computer sciences (CS).
SOURCE: National Science Foundation. Survey of Earned Graduates. Arlington, VA: National Science Foundation, 2005.