Frequencies for first 10,000 rows of scpwi12d variable in namcs2002 dataset :

      Scope |
  procedure |
write-in #1 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      9,697       96.97       96.97
         21 |          1        0.01       96.98
         22 |         50        0.50       97.48
         29 |          3        0.03       97.51
         31 |         27        0.27       97.78
         33 |          1        0.01       97.79
         42 |          2        0.02       97.81
         44 |          3        0.03       97.84
         45 |        103        1.03       98.87
         48 |          6        0.06       98.93
         49 |         16        0.16       99.09
         51 |          2        0.02       99.11
         54 |          1        0.01       99.12
         57 |         64        0.64       99.76
         68 |          3        0.03       99.79
         70 |         10        0.10       99.89
         88 |          2        0.02       99.91
         89 |          1        0.01       99.92
         99 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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