Frequencies for first 10,000 rows of proc32d variable in namcs2009 dataset :

procedure 3 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,803       98.03       98.03
         03 |          1        0.01       98.04
         04 |          9        0.09       98.13
         54 |          1        0.01       98.14
         60 |          1        0.01       98.15
         81 |          2        0.02       98.17
         86 |          1        0.01       98.18
         88 |          1        0.01       98.19
         89 |        122        1.22       99.41
         90 |         11        0.11       99.52
         91 |          1        0.01       99.53
         92 |          1        0.01       99.54
         93 |          4        0.04       99.58
         95 |         34        0.34       99.92
         99 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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