Frequencies for first 10,000 rows of proc32d variable in namcs1993 dataset :

 service #3 |
  procedure |
   code - 2 |
     digits |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,813       98.13       98.13
         04 |          1        0.01       98.14
         29 |          1        0.01       98.15
         42 |          1        0.01       98.16
         45 |          3        0.03       98.19
         48 |          1        0.01       98.20
         49 |          1        0.01       98.21
         57 |          1        0.01       98.22
         69 |          1        0.01       98.23
         76 |          1        0.01       98.24
         81 |          2        0.02       98.26
         85 |          1        0.01       98.27
         86 |          1        0.01       98.28
         87 |         32        0.32       98.60
         88 |         23        0.23       98.83
         89 |         42        0.42       99.25
         90 |          3        0.03       99.28
         91 |         14        0.14       99.42
         92 |          6        0.06       99.48
         93 |         38        0.38       99.86
         94 |          1        0.01       99.87
         95 |          5        0.05       99.92
         96 |          2        0.02       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016