Frequencies for first 10,000 rows of prov6155 variable in pos2006 dataset :

       srv: |
  ambulance |
    (owned) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |      1,250       12.50       99.60
          1 |         12        0.12       99.72
          2 |         27        0.27       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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