Frequencies for first 10,000 rows of opccr variable in psfhos201704 dataset :

  Operating |
    Cost to |
     Charge |
      Ratio |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,781       97.81       97.81
        .19 |          1        0.01       97.82
       .202 |         10        0.10       97.92
       .217 |          6        0.06       97.98
       .226 |          1        0.01       97.99
       .228 |        185        1.85       99.84
       .251 |          1        0.01       99.85
        .28 |          2        0.02       99.87
       .296 |          3        0.03       99.90
       .344 |          1        0.01       99.91
       .353 |          1        0.01       99.92
       .384 |          1        0.01       99.93
       .409 |          4        0.04       99.97
          1 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018