Frequencies for first 10,000 rows of esrd_ntwrk_num variable in pos1992 dataset :

       esrd |
  network # |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,523       95.23       95.23
         02 |          1        0.01       95.24
         04 |          2        0.02       95.26
         05 |          9        0.09       95.35
         08 |         53        0.53       95.88
         13 |         43        0.43       96.31
         14 |          1        0.01       96.32
         15 |         74        0.74       97.06
         16 |          2        0.02       97.08
         17 |        109        1.09       98.17
         18 |        183        1.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017