Frequencies for first 10,000 rows of sourcename variable in plan2017 dataset :

Source Name |      Freq.     Percent        Cum.
------------+-----------------------------------
       HIOS |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017