Frequencies for first 10,000 rows of proc6r variable in namcs2015 dataset :

    Numeric |
 version of |
   write-in |
  procedure |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,990       99.90       99.90
       1371 |          1        0.01       99.91
       5732 |          3        0.03       99.94
       8875 |          1        0.01       99.95
       8908 |          1        0.01       99.96
       8922 |          1        0.01       99.97
       8929 |          1        0.01       99.98
       8939 |          1        0.01       99.99
       9505 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017