Frequencies for first 10,000 rows of proc32d variable in namcs2010 dataset :

procedure 3 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,794       97.94       97.94
         03 |          3        0.03       97.97
         06 |          1        0.01       97.98
         22 |          1        0.01       97.99
         36 |          1        0.01       98.00
         44 |          1        0.01       98.01
         45 |          2        0.02       98.03
         54 |          1        0.01       98.04
         69 |          1        0.01       98.05
         81 |          2        0.02       98.07
         86 |         10        0.10       98.17
         89 |        101        1.01       99.18
         90 |          8        0.08       99.26
         91 |          2        0.02       99.28
         93 |         11        0.11       99.39
         95 |         44        0.44       99.83
         96 |          1        0.01       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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