Frequencies for first 10,000 rows of scl_srvc_cd variable in pos2012 dataset :

   Services |
  Provided: |
     Social |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,476       84.76       84.76
          0 |        161        1.61       86.37
          1 |      1,019       10.19       96.56
          2 |        239        2.39       98.95
          3 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016