Frequencies for first 10,000 rows of proc22d variable in namcs2009 dataset :

procedure 2 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,348       93.48       93.48
         03 |          1        0.01       93.49
         04 |          2        0.02       93.51
         09 |          1        0.01       93.52
         31 |          1        0.01       93.53
         35 |          1        0.01       93.54
         37 |          2        0.02       93.56
         44 |          1        0.01       93.57
         45 |         13        0.13       93.70
         48 |          1        0.01       93.71
         53 |          1        0.01       93.72
         64 |          1        0.01       93.73
         68 |          1        0.01       93.74
         79 |          1        0.01       93.75
         80 |          1        0.01       93.76
         81 |          6        0.06       93.82
         82 |          1        0.01       93.83
         83 |          6        0.06       93.89
         84 |          1        0.01       93.90
         86 |         18        0.18       94.08
         87 |          1        0.01       94.09
         88 |          5        0.05       94.14
         89 |        232        2.32       96.46
         90 |         31        0.31       96.77
         91 |          5        0.05       96.82
         92 |          1        0.01       96.83
         93 |         41        0.41       97.24
         94 |          5        0.05       97.29
         95 |        233        2.33       99.62
         96 |          2        0.02       99.64
         98 |          1        0.01       99.65
         99 |         35        0.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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