Frequencies for sourcename variable in network2015 dataset :

Source Name |      Freq.     Percent        Cum.
------------+-----------------------------------
       HIOS |        746       51.13       51.13
        OPM |         45        3.08       54.22
      SERFF |        668       45.78      100.00
------------+-----------------------------------
      Total |      1,459      100.00

by Jean Roth , jroth@nber.org , 9 Dec 2017