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

 Do you share any |
of the previously |
  mentioned types |
   of information |
   using a Summar |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |        886        8.86        8.86
   Not applicable |      6,235       62.35       71.21
              Yes |      1,608       16.08       87.29
               No |      1,271       12.71      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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