Frequencies for first 10,000 rows of proc32d variable in namcs1994 dataset :

 service #3 |
  procedure |
   code - 2 |
     digits |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,770       97.70       97.70
         08 |          1        0.01       97.71
         16 |          4        0.04       97.75
         37 |          1        0.01       97.76
         44 |          1        0.01       97.77
         45 |          2        0.02       97.79
         48 |          2        0.02       97.81
         53 |          1        0.01       97.82
         57 |          1        0.01       97.83
         70 |          1        0.01       97.84
         75 |          2        0.02       97.86
         81 |          1        0.01       97.87
         86 |          3        0.03       97.90
         87 |         45        0.45       98.35
         88 |         27        0.27       98.62
         89 |         47        0.47       99.09
         90 |         11        0.11       99.20
         91 |         17        0.17       99.37
         92 |          3        0.03       99.40
         93 |         27        0.27       99.67
         94 |          1        0.01       99.68
         95 |         25        0.25       99.93
         96 |          2        0.02       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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