Frequencies for first 10,000 rows of proc52d variable in namcs1994 dataset :

 service #5 |
  procedure |
   code - 2 |
     digits |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,981       99.81       99.81
         87 |          5        0.05       99.86
         88 |          2        0.02       99.88
         89 |          4        0.04       99.92
         90 |          3        0.03       99.95
         91 |          1        0.01       99.96
         92 |          1        0.01       99.97
         95 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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