Frequencies for first 10,000 rows of prov2140 variable in pos2006 dataset :

       srv: |
  emergency |
   services |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |        329        3.29       90.39
          1 |        663        6.63       97.02
          2 |        139        1.39       98.41
          3 |        159        1.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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