Frequencies for first 10,000 rows of func_sys variable in person dataset :

 functional |
     system |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,578       15.78       15.78
          2 |      1,384       13.84       29.62
          3 |      2,825       28.25       57.87
          4 |      1,889       18.89       76.76
          5 |      1,227       12.27       89.03
          6 |        178        1.78       90.81
          7 |        663        6.63       97.44
         96 |          4        0.04       97.48
         98 |        247        2.47       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016