Frequencies for first 10,000 rows of scopewi1 variable in namcs2008 dataset :

scope write |
      in #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,845       98.45       98.45
       3142 |          1        0.01       98.46
       3323 |          1        0.01       98.47
       4468 |          1        0.01       98.48
       4513 |         11        0.11       98.59
       4523 |        109        1.09       99.68
       4823 |          7        0.07       99.75
       4921 |          1        0.01       99.76
       5732 |          2        0.02       99.78
       7021 |          2        0.02       99.80
       8021 |          2        0.02       99.82
       8026 |          3        0.03       99.85
       9999 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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