Frequencies for first 10,000 rows of prov0710 variable in pos1991 dataset :

administrat |
       or - |
   contract |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,964       99.64       99.64
        .01 |          2        0.02       99.66
        .05 |          1        0.01       99.67
         .1 |          1        0.01       99.68
        .11 |          1        0.01       99.69
        .25 |         16        0.16       99.85
         .5 |          2        0.02       99.87
          1 |          5        0.05       99.92
       1.25 |          4        0.04       99.96
        1.5 |          1        0.01       99.97
       1.75 |          1        0.01       99.98
        2.5 |          1        0.01       99.99
         20 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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