Table 3-2
Doctorates awarded, by broad field of doctorate: 1920–99
 
  Doctorates awarded   % distribution
5-year period All fields Science
and engineering
Non-science
and engineering
  Total Science
and engineering
Non-science
and engineering
All periods 1,354,873 835,221 519,652   100 61.6 38.4
1920–24 4,199 2,724 1,475   100 64.9 35.1
1925–29 7,736 4,907 2,829   100 63.4 36.6
1930–34 11,977 7,455 4,522   100 62.2 37.8
1935–39 13,697 8,487 5,210   100 62.0 38.0
1940–44 14,725 9,267 5,458   100 62.9 37.1
1945–49 15,904 10,014 5,890   100 63.0 37.0
1950–54 38,670 25,277 13,393   100 65.4 34.6
1955–59 44,019 28,308 15,711   100 64.3 35.7
1960–64 58,699 38,267 20,432   100 65.2 34.8
1965–69 103,372 66,183 37,189   100 64.0 36.0
1970–74 161,208 94,862 66,346   100 58.8 41.2
1975–79 159,728 90,804 68,924   100 56.8 43.2
1980–84 156,105 91,690 64,415   100 58.7 41.3
1985–89 163,396 100,930 62,466   100 61.8 38.2
1990–94 193,326 123,214 70,112   100 63.7 36.3
1995–99 210,535 134,271 76,264   100 63.8 36.2
 
NOTE: The Survey of Earned Doctorates (SED) was collected by calendar year from 1920 through 1957 and by academic year from 1958 on. Because the second half of calendar year 1957 is part of the 1958 SED, detail does not add to total. The sum of doctorates awarded in 1920–99 is actual and is the number percentages are based on.
 
SOURCE: NSF/NIH/USED/NEH/USDA/NASA, Survey of Earned Doctorates and Doctorate Records File.
 
U.S. Doctorates in the 20th Century