Frequencies for sourcename variable in network2018 dataset :

Source Name |      Freq.     Percent        Cum.
------------+-----------------------------------
       HIOS |        285       43.38       43.38
        OPM |          1        0.15       43.53
      SERFF |        371       56.47      100.00
------------+-----------------------------------
      Total |        657      100.00

by Jean Roth , jroth@nber.org , 23 May 2018