Frequencies for first 10,000 rows of dctd_er_srvc_cd variable in pos2005 dataset :

       srv: |
  emergency |
       dept |
(dedicated) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |      1,229       12.29       99.60
          1 |         32        0.32       99.92
          2 |          3        0.03       99.95
          3 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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