Frequencies for underide variable in vehicle dataset :

UNDERRIDE/O |
    VERRIDE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        682       94.07       94.07
          7 |          1        0.14       94.21
          9 |         42        5.79      100.00
------------+-----------------------------------
      Total |        725      100.00

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