Frequencies for first 10,000 rows of proc42d variable in namcs2011 dataset :

Procedure 4 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,819       98.19       98.19
         29 |          1        0.01       98.20
         43 |          1        0.01       98.21
         44 |          4        0.04       98.25
         48 |          1        0.01       98.26
         49 |          2        0.02       98.28
         54 |          1        0.01       98.29
         68 |          1        0.01       98.30
         86 |          6        0.06       98.36
         87 |          1        0.01       98.37
         89 |        129        1.29       99.66
         90 |          4        0.04       99.70
         91 |          1        0.01       99.71
         92 |          4        0.04       99.75
         93 |          1        0.01       99.76
         95 |         20        0.20       99.96
         96 |          1        0.01       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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