Frequencies for first 10,000 rows of scl_srvc_cd variable in pos2000 dataset :

srv: social |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,792       87.92       87.92
          0 |        121        1.21       89.13
          1 |        809        8.09       97.22
          2 |        209        2.09       99.31
          3 |         69        0.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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