Frequencies for first 10,000 rows of mdcl_scl_workr_vlntr_cnt variable in pos20

    Medical |
     Social |
  Workers - |
  Volunteer |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        640        6.40        6.40
        .25 |          4        0.04        6.44
         .5 |          1        0.01        6.45
          1 |         16        0.16        6.61
          2 |          2        0.02        6.63
          3 |          2        0.02        6.65
        5.5 |          1        0.01        6.66
          8 |          1        0.01        6.67
          . |      9,333       93.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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