Frequencies for first 10,000 rows of prov2225 variable in pos1999 dataset :

       srv: |
    medical |
   supplies |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,573       95.73       95.73
          0 |         22        0.22       95.95
          1 |        148        1.48       97.43
          2 |        256        2.56       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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