Frequencies for first 10,000 rows of age variable in usrace19ages dataset :

        Age |      Freq.     Percent        Cum.
------------+-----------------------------------
    0 years |        450        4.50        4.50
  1-4 years |        615        6.15       10.65
  5-9 years |        612        6.12       16.77
10-14 years |        629        6.29       23.06
15-19 years |        634        6.34       29.40
20-24 years |        601        6.01       35.41
25-29 years |        609        6.09       41.50
30-34 years |        617        6.17       47.67
35-39 years |        606        6.06       53.73
40-44 years |        601        6.01       59.74
45-49 years |        570        5.70       65.44
50-54 years |        545        5.45       70.89
55-59 years |        515        5.15       76.04
60-64 years |        486        4.86       80.90
65-69 years |        447        4.47       85.37
70-74 years |        408        4.08       89.45
75-79 years |        393        3.93       93.38
80-84 years |        344        3.44       96.82
  85+ years |        318        3.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 2 Jan 2018