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

    Roadway |
   Function |
      Class |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,055       10.55       10.55
          2 |        361        3.61       14.16
          3 |      2,737       27.37       41.53
          4 |      2,050       20.50       62.03
          5 |        367        3.67       65.70
          6 |      1,263       12.63       78.33
          7 |        316        3.16       81.49
          8 |      1,838       18.38       99.87
          9 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016