Frequencies for first 10,000 rows of prov1505 variable in pos1995 dataset :

 registered |
   nurses - |
  volunteer |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,949       99.49       99.49
        .01 |          1        0.01       99.50
        .05 |          1        0.01       99.51
        .13 |          2        0.02       99.53
        .25 |         10        0.10       99.63
         .5 |          2        0.02       99.65
        .75 |          2        0.02       99.67
          1 |         11        0.11       99.78
       1.25 |          1        0.01       99.79
        1.5 |          1        0.01       99.80
          2 |         10        0.10       99.90
          3 |          5        0.05       99.95
        3.5 |          1        0.01       99.96
          4 |          1        0.01       99.97
          6 |          1        0.01       99.98
          8 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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