Table 4 Undergraduate, Postbaccalaureate and Graduate Student Enrollment by Age Category, Fall 1997 Postbacca- Age Category Undergraduate laureate Graduate Total 19 and Under 54,940 4 1 54,945 20-24 131,313 4,159 4,612 140,084 25-29 48,516 8,385 13,613 70,514 30-34 16,876 4,224 7,886 28,986 35-39 10,142 3,077 4,928 18,147 40-44 6,882 2,780 3,728 13,390 45-49 4,221 2,373 3,041 9,635 50-54 1,864 1,273 1,656 4,793 55-59 586 414 548 1,548 60-64 287 228 159 674 65-69 179 200 85 464 70-74 113 157 50 320 75-79 44 76 15 135 80-84 22 27 10 59 85-89 19 10 1 30 90-94 1 1 0 2 95-99 29 1 0 30 Unknown 20 2 1 23 All Ages 276,054 27,391 40,334 343,779