text: FIGURE 2-8 Percentage of mathematics and statistics doctorates awarded in the United States, by gender, race, and citizenship, 1980-1998. NOTE: The percentage of females is the number of females divided by the number of (females plus males). In some cases gender was unknown. The same is true for citizenship. “Underrepresented minorities” includes blacks, non-Hispanics; American Indians or Alaska Natives; and Hispanics. The percentage of underrepresented minorities is divided by total doctorates, which include some people for whom race/ethnicity is “other/unknown.” SOURCE: National Science Foundation, “Survey of Earned Doctorates/Doctorate Records File,” accessed via WebCASPAR, http://webcaspar.nsf.gov.