Frequencies for first 10,000 rows of proc52d variable in namcs2013 dataset :

Procedure 5 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,942       99.42       99.42
         12 |          1        0.01       99.43
         13 |          4        0.04       99.47
         14 |          1        0.01       99.48
         40 |          1        0.01       99.49
         55 |          1        0.01       99.50
         73 |          1        0.01       99.51
         81 |          1        0.01       99.52
         86 |          1        0.01       99.53
         87 |          1        0.01       99.54
         89 |         15        0.15       99.69
         90 |          9        0.09       99.78
         91 |          7        0.07       99.85
         93 |          2        0.02       99.87
         95 |          3        0.03       99.90
         96 |          1        0.01       99.91
         99 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017